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  1. science fair project ideas
  2. Percent acetic acid by weight
  3. Redox equations
  4. [SOLVED] an AP chem free response (please help!!)
  5. Chemical Bonding
  6. activation energy
  7. how many isomers does C4H9Br have?
  8. Enthalpy of Combustion for Magnesium
  9. Phosphate Buffers
  10. Rates of Reaction
  11. Show size relationship between protons, neutrons and electrons using the AMU in model
  12. Gaseous Oxygen = Paramagnetic?
  13. Reactions
  14. Calculating heat of combustion
  15. organic chem
  16. Chemistry help-forces
  17. packing of particles
  18. Urea!?! pH level of it?
  19. Nomenclature
  20. Karyotypes
  21. Stoichiometry
  22. electrolysis
  23. Solubility
  24. Net ionic compounds
  25. General Chemistry Questions (Solubility)
  26. Molarity and Reactants
  27. weak acids
  28. unanswered chemistry question (from a test)
  29. Stoichiometry, Part II (and Percentage Yield)
  30. Pka and solubility
  31. Eudiometery(pls help me)
  32. Why is this ion more paramagnetic?
  33. Mating, how many offspring?
  34. Cellular Viability
  35. Help
  36. Net Ionic
  37. botany questions
  38. Recrystallization Questions - help needed urgent!
  39. A pH problem
  40. Beet Root Cell Permeability
  41. HELP with unknown Monobasic HA question!!
  42. Help with molecular geometry!
  43. What is spin?
  44. Heat Question
  45. Photosynthesis - urgent help!
  46. Ionization Energy
  47. Physical Science Calculations NEED HELP ASAP
  48. intro Thermodynamic question
  49. Molecules
  50. PLEASE HELP!!! Ionization Energy Question
  51. Hemoglobin binding
  52. Making a buffer
  53. Help, homework question!
  54. Polyatomic ions, -ate and -ite suffixes
  55. Balancing Equations
  56. FAQ: Why hasn't anybody answered my question?
  57. Calculating net charge
  58. [Chemistry] colligative properties
  59. immediate help rate of reaction
  60. pka vs ph
  61. mother of all equations
  62. Please help me in finding this relative molecular weight
  63. pH of an acetic acid
  64. Degree of Dissociation
  65. Molality creating problems for me!!!!
  66. mass of a star
  67. Sordaria Questions
  68. Help with meiosis
  69. Dipoles
  70. Vapor Pressure Lowering
  71. Acid-Base Reaction question
  72. Citral
  73. Nucleophile
  74. simple physiology questions
  75. Concentration Graphs: Instantaneous time
  76. Reductions of C=O
  77. Could someone check this for me? (photon and wavelength)
  78. Bunch of Equations and Stoichiometry...
  79. disscusion for Bio Experiment
  80. Double Dispalcement Reactiosn
  81. Chemistry Help!
  82. Precipitation Reaction
  83. Molality
  84. cryptography question--how to solve a Ceaser Cipher
  85. entropy #1
  86. entropy #2
  87. chemistry help
  88. cellular respiration biology lab discussion
  89. lead oxide + base
  90. dodecahedral metal coordination?
  91. Chemistry-help please
  92. kinetics of an iodine clock reaction?????
  93. Three essential fatty acids
  94. Proper Compound Preparation
  95. Kf of Iron(III)Thiocyanate?
  96. my textook=wrong?
  97. help with light, wavelength, and photons
  98. check this please
  99. Cars & Corrosion
  100. ACID-BASE Equilibria
  101. [chem]Lewis Structure-Expanded Valence Shell
  102. problem of day 24- help
  103. explain this
  104. Chemistry question..pretty urgent..
  105. Chemistry: Algebra Combining Equations [Enthalpy]
  106. Chemistry - Stoichiometry - Some limiting reactants
  107. Freezing point
  108. Chem Problem I don't get
  109. mixture or substance?
  110. Sphere equation?
  111. Can't seem to match final answer!!
  112. rates of reaction
  113. i need help! soap is too complex
  114. is anyone in
  115. Quick question!
  116. DOUBLE Replacement Reactions
  117. Factor(s) that affect percent yield
  118. Genetics-Two heterozygous brown-eyed (Bb) ...
  119. reducing and oxidizing agents
  120. Pls help
  121. Quick Chemistry Question!
  122. total # of electrons transferred
  123. Enthalpy of Dissolution vs. Enthalpy of Solution
  124. redox reactions
  125. P.V = n.R.T
  126. Biochemistry pathologies.. ??
  127. error bars?help needed on enzymes
  128. Mass Spectrometer Question!
  129. Help With Half Reaction/Redox Equation
  130. Genetics Problem
  131. The Empericial Formula
  132. chemistry - test- help
  133. elements
  134. Endosomes
  135. Stoichiometry
  136. Help with Chemistry problem
  137. Electromagnetic Radiation
  138. Equation Help
  139. Determine the phenotypes of progrency
  140. Column Chromotography
  141. Question on Endo/Exothermic reactions
  142. Problem with titration problem Please HELP!!!
  143. equilibrium question
  144. Chi-Square Test
  145. nuclides question
  146. Ionization Energy
  147. explanations of variations in errors with regards to enzymes
  148. The variable R as the Universal Gas Constant
  149. Bismuth sulphide structural diagram
  150. Boiling Points of Liquids..HELP TEST TOMORROW!
  151. Redox Balancing Question
  152. can potato skin effect the rate at which catalase breaks down hydrogen peroxide
  153. gas laws corrections
  154. Alkali Metals and Ionization Energy
  155. Amphoteric Oxides.
  156. Electron Configuration
  157. ic suffix in chem nomenclature
  158. help me to answer these questions...
  159. Net Ionic Equations
  160. Chem problem
  161. Benedict's Solution
  162. Totally lost in a chem lab report
  163. Gas and Equilibrium Questions
  164. Molar fraction !
  165. Factors affecting performance of Antacids
  166. Chemistry Grade 12 Help|URGENT
  167. Copper ions + CuIIClsub2AL
  168. Measuring the pH of an acid
  169. Orbitals in Bond Formation
  170. Grade 7 pH question.
  171. Homologous or Analogous Features?? HELP! PLZ
  172. Help needed...molar Fraction !
  173. some help please
  174. electrons on outer ring (transition metals)
  175. Resonance Structures
  176. The Sun and Nuclear Power Plants
  177. Using A Centigram Balance
  178. Balancing [Redox] Equations
  179. enthalpy change & lattice energy - check please
  180. ionic or covalent- Please check
  181. lewis structure- and bases check please
  182. ionic or covalent- check this please
  183. Dipole moment of water
  184. Standard Heat of Formation Question
  185. Homework Problem
  186. Reducing Agents
  187. Inorganic chemistry help
  188. Acid/Base Question
  189. pH-calculation
  190. Stoichiometry problem
  191. Nedd help with Friedel Crafts alkylation
  192. Donnan Equation
  193. Could someone help me please?
  194. Cycles of Matter
  195. Concentration and pressure problem. Need help!
  196. Acid base titration problem. Need Help!
  197. Help with percent concentration of hydrogen peroxide if diluted?
  198. Antarctica Assignment
  199. Energy Flow
  200. [CHEM] Equlibrium Help plz!
  201. thermodynamics
  202. Plastics,etc questions
  203. Chemistry Concept Map
  204. pH scale
  205. Chemistry Grade 11 - CuSO4 hydrous/anhydrous help!
  206. Acid-Base Reaction
  207. am i overcomplicating things?
  208. Redox Question
  209. converting with moles (chem20)
  210. Landfill problem
  211. Balancing redox equation
  212. - Mole and Avogadro's Number -
  213. chiral help?
  214. Endothermic and Exothermic
  215. Clausius-Clapeyron equation
  216. Adding Acid to buffered solution
  217. please help
  218. NEED HELP!!! what is the difference between a fat cell and a lipid?¿?
  219. beer lambert equation and concentration
  220. Calorimetry and Water
  221. Hess' Laws
  222. Why are spontaneous reactions usually exothermic?
  223. If you prepare 1/10 dilution of 10mg/ml..
  224. periodic table
  225. Narrow sense hertiablility
  226. lead and calorimetry
  227. Heat Capacity and Heat
  228. Colligative Properties of Nonelectrolyte Solutions
  229. quick question . . . .
  230. Pz help
  231. Enthalpy of Reaction question
  232. what the title should be?
  233. Quick organic chemistry question
  234. Urgent Help Plzzz
  235. Urgent Help with IUPAC
  236. bohr's model
  237. Help! How to get the mole fraction ?
  238. balancin an equation!!!
  239. trans-2-pentene
  240. copper iron zinc correlation
  241. XeF6
  242. Anions and Cations
  243. Deductive Essay
  244. Organic Nomenclature and Simple Reactions
  245. Erosion Control
  246. Melting Point of three compounds
  247. molecular geometry
  248. Cation solutions
  249. Calculate concentration of halfcell
  250. Pressure and Kinetic Energy of Gases
  251. Soluble Cations and Anions
  252. Sucralose molecule formula - help, please?
  253. Vapor Pressure
  254. Catabolism!
  255. Chemistry Concept Review
  256. Help Quick!!
  257. Help please!!
  258. Question about activation energy
  259. Help with a reaction equation
  260. Solubility
  261. Polychlorinated Biphenyls
  262. Some help understanding calculated vibrational frequncies
  263. Need Help
  264. Some Questions
  265. DNA molecules
  266. Enthalpy
  267. Forming Compounds
  268. Titration problem
  269. Project Idea Help
  270. mercury battery reaction
  271. Titration Curves
  272. Still am having trouble with titration
  273. air circulation on earth
  274. hydrostatic balance
  275. SN2 reaction
  276. why my answer is wrong? --- remove electron from orbital
  277. chemistry questions
  278. formal charge
  279. biology question
  280. 3D NMR...HNCA Experiment
  281. Chesmistry 12|VSEPER Problems|Quick Problems
  282. optimum orientation of molecule
  283. Kevlar heat resistivity
  284. Fun project
  285. Respiration
  286. Two point estimates am i correct
  287. Physics for people with colds
  288. pH scale Question
  289. Electrolysis Molten Metal Halides (Salts)
  290. Crystalline structures
  291. Kevlar flexibility
  292. help in chemfinder
  293. help about properties of PCB
  294. URGENT- Calibration curve question
  295. IUPAC naming!!!
  296. questions about dative covalent bond and complexes
  297. pink
  298. Thorium Chemical Equations
  299. MO for BrF5
  300. Temperature in Sapce
  301. Entropy
  302. Oil
  303. Chemical Bonds
  304. Insulating
  305. simple enthalpy question
  306. Hess' Law, checking my answer
  307. Calculations of Solubility Product of Lead 2 Chloride
  308. best oxidizing and reducing agent in periodic table
  309. compound/molecure
  310. help asap!!!
  311. How many times more soluble........ ASAP HELP
  312. HELP solubility product determine solubility of lead 2 chloride mol/L and g/L
  313. Electrode Potentials and Complexing
  314. Energy
  315. Paper Chromotography Lab
  316. Lewis Dot Drawings
  317. Hydrochloric Acid & Marble Chips (CaCO3)
  318. Finding pH of a buffer solution
  319. Enzymes
  320. pH levels
  321. heptitis b
  322. Phytoplankton
  323. chemistry coursework, identifying unknown chemicals
  324. Radiocarbon dating? o.O
  325. More Phytoplankton
  326. DNA content...
  327. I need help with calculating the pressure inside my hovercraft.
  328. Fish Help
  329. DNA question
  330. 3 Chem Equations
  331. Chem Question, Reaction Rate
  332. Naming of hydrocarbons
  333. Benzene Problem
  334. Specific Heat Practice
  335. carboxylic acids
  336. Vagus Nerve
  337. Chemistry Questions (alot)
  338. chem empirical questions?
  339. heat questions
  340. Process Calculation
  341. Naming Carboxylic Acids
  342. Reaction of Mg with acids (molat enthalpy and rate of reaction)
  343. How to test if some unknowns are covalent or ionic?
  344. Hello
  345. What on Earth is this?
  346. oil song???
  347. How much acid do i need?
  348. 1st order, 2nd order Rate reactions HELP!!
  349. Food Webs
  350. A few general questions
  351. Some hard questions
  352. Concentration Problem
  353. isomer
  354. Help me understand what a Chromosome and Protein is
  355. Thermodynamics
  356. Potato Core Osmolarity
  357. Osmosis, Solutes, and Solvents
  358. Vapor Pressure
  359. Relative stability of iron ions
  360. Organic Chemistry
  361. Acids and pH
  362. Something about fatty acid
  363. empirical formula question
  364. Chemistry Acid and Base
  365. chemistry acid and base 2
  366. Finding buffer capacities...
  367. When naming an Alcohol
  368. Smallest Heat of Comb.
  369. Electronegativity
  370. Limits of detection/decision/determination
  371. Ecology
  372. Interpolation vs Extrapolation
  373. mass
  374. Question about equilibrium constant
  375. Alkyloxonium Ions and water
  376. K value
  377. Precise/Accurate?
  378. transition metal complexes
  379. Molar Mass of Unknown Solute and Mole Fraction of Gases
  380. atoms/molecules
  381. moles of unknown metal
  382. Intermolecular forces
  383. Osmosis
  384. pH of 10^-7 M acid
  385. product of the reaction
  386. product formed
  387. Equation Confusion
  388. Types of Reactions
  389. some basic chem questions
  390. Ions Table
  391. A Couple of Kinetics Questions
  392. Ocean Currents
  393. Chemistry Question
  394. Basic (Very) chemistry
  395. Acid Base Titration: Finding pH
  396. Signigicant Figures
  397. Reaction Rate and Activation Energy
  398. electrochemistry (solubility)
  399. ATP in Muscle Contractions
  400. more simple chemical changes
  401. Properties Of Solutions
  402. A Lab question antibody recognition
  403. Isotopes
  404. Chemical Equations Balancing
  405. First Order Reaction
  406. Naming Ionic Compounds
  407. Gen Chem
  408. Easy chem
  409. Ammonia
  410. the calvin cycle
  411. General Chemistry
  412. Moles
  413. Organic Chem- acid catalyzed reation
  414. Geology - The Formation of Earthquakes
  415. Molarity
  416. Finding pH
  417. Fill in the missing nucleotide (translation) PLEASE HELP ASAP!
  418. Biology - Cell membrane
  419. Carbohydrates
  420. Ion Concentrations and Equilibrium
  421. Chem Lab Help Please
  422. seperating mixtures
  423. Determining the product of a reaction based on mean wt% and Standard Deviation
  424. Chemistry - calculating equilibrium constant, what am I doing wrong?
  425. Philosophy Paper
  426. Finding Equilibrium Constants
  427. Entropy changes for reactions: Understanding Periodic Trends ...
  428. Equilibrium equations
  429. Shifts in Equilibrium
  430. Delta
  431. Ionic equilibrium - hint needed
  432. Spider Silk
  433. College Biology Help
  434. Genetics Problem
  435. Products?
  436. Qsp Calculations
  437. Rate Law quick question
  438. Finding Michaelis-menten constant and Vmax
  439. Functional group in esters
  440. crystal lattice and unit cell
  441. Stoichiometry Practice Problems
  442. electron configuration
  443. Why does germanium have a greater electronegativity than phosphorus?
  444. Catalyst
  445. Macroscopic property
  446. Chemical Reaction
  447. net ionic equations
  448. Biology genetic question
  449. another bio question
  450. last bio question
  451. pH with 2 acids
  452. Proton NMR (Enantiomer vs. Diastereomer)
  453. Stoichiometry Mole Conversion Problems
  454. bio question...lactose intolerance
  455. Hydrates
  456. net ionic equation (need help)
  457. from empirical formula to molecular formula (need help)
  458. The "Enchanted" Cardboard Experiment
  459. Beta amino acids
  460. Balancing Redox Equations
  461. Drawing a genetic map (recombination)
  462. questions from a lab on pH and water
  463. question on DNA gel analysis
  464. I need help on a chemistry problem.. PLEASEEE
  465. Vapor pressure of Water calculation
  466. What are the most abundant elements in the Biosphere?
  467. Acid and Base Equilibrium Question
  468. Electrolysis of water - Hydrogen
  469. Project Idea
  470. Hydrogen
  471. catalyst
  472. Egg White Protein Structure Change
  473. Ammonia - Fritz Haber
  474. Ammonia Fire
  475. Effect of raising temperature on equilibrium constant?
  476. Changes of State.. ice to steam problem
  477. bioethanol production
  478. Enthalpy change
  479. Glycosides
  480. Chemical Bonding in Hydrocarbon
  481. Chem Lab: Acids and Bases
  482. Degredation of Glucose
  483. Elimination reactions of Haloalkanes. Help!
  484. Ionisation constants
  485. Heat of reaction
  486. Exothermic reaction
  487. Born-Haber Process
  488. Finding Molar Heat of a Solution
  489. Rate Law problems
  490. Internal Glycosides / anhydrosugars
  491. Acid Strength and Conjugate Bases
  492. Incomplete/ Reversible reaction
  493. Le Chatelier Principle
  494. Chemistry Reduction Reaction Help Needed
  495. Chemistry Homework Help
  496. pH and the Acid Dissociation Constant
  497. the thesis statement
  498. Simple question about microorganisms
  499. Acid Equilibrium
  500. Chemical Kinetics Question
  501. an enzyme lab
  502. Two Tricky Problems
  503. pOH and Dissociation Constant
  504. pH of solution (not enough infromation?)
  505. Chemistry Help!
  506. Can some one explain balacing chemical equations to me
  507. A Solution's pH
  508. The Cartesian Diver Experiment
  509. Intro Chemistry: Does this look ok?
  510. Buffer Question
  511. biology related science fair ideas?
  512. Temperature and Pressure
  513. Experiment's ph, simple i think
  514. neurons and axons
  515. lewis acid/base
  516. the process of meiosis
  517. Reaction problem
  518. left or right hand material
  519. Electron Dot Structure
  520. Sodium dodecylbenzene sulfonate- What is it?
  521. whats the difference between a reactant and a reagent?
  522. Limiting Reactant Problems Stoichiometry
  523. A few more Stoichiometry Questions!!
  524. Neutralization with equilibrium
  525. Question on the periodic table
  526. Hydroxylamine
  527. Iron Contents of Soft Drinks and Alcoholic Beverages
  528. Reaction- Wierd
  529. Cation and Anion Help pLease
  530. Probability question
  531. Chem - Equilibrium
  532. Figuring molecule shapes and polarity
  533. pH of Salts
  534. Photosynthesis question...
  535. Simple yet interesting project in Bio
  536. tidal locking radius
  537. How Do you create a ball n stick model?
  538. Food Preservation
  539. Enthalpy of Reactions - can someone help me real quick?
  540. determining pH problem, help please
  541. syntesis of [(Ph3P)2CuS2MoS2Cu(PPh3)]
  542. Basic 3-body problem
  543. Ionic or Molecular
  544. Monatomic ion dot diagram
  545. Liquid-Solid Cooling Curves
  546. Laser Beams
  547. molar mass
  548. Partial Pressure Equilibrium lab
  549. equation showing formation of a compound
  550. Rock Salt Ceramic Structure
  551. Enthalpy
  552. Finding K_sp
  553. Bunny in a Vacuum
  554. Decomposition
  555. Partial Pressure problem with three tanks, only [atm] and [L] are given. H2, N2, CO2
  556. Measuring Heat Changes
  557. Static Substrate - Collisions
  558. Equilibrium Concentration
  559. Please help! Molecular formula Q
  560. Standard Rf Values - Biology (Photosynthesis)
  561. Haemoglobin properties.
  562. Acid-Base Reaction
  563. melting point
  564. Research of strucutre
  565. Some simple chemical reaction help
  566. Biology Question: G3P and Pyruvate
  567. Acid-Base Chemistry question
  568. Please help me
  569. Fe-N bond!
  570. structural analysis: matrix question
  571. Conjugate Base
  572. Stoichiometry and Gas Laws - Please help
  573. Net Ionic Equations
  574. Could You Glow in the Dark?
  575. Organic Chemistry - Camphor Synthesis
  576. whats is this equation?
  577. please HELP! Could You Glow in the Dark?
  578. Double Replacement
  579. Bromcresol Green
  580. Chemical bonding - spin of bonded electrons
  581. color and the relation to d orbitals
  582. Very simple inorganic chemical reaction HELP!
  583. Simple Chemistry Problem - Please help!
  584. Synthesis Reactions---Help
  585. Balancing Chemical Equations
  586. precipitate
  587. Renal Response to Hydrated Exercise?
  588. Buffer Capacity
  589. Equilibrum
  590. Solar Radiation Question
  591. Organic Chemistry: are these answers correct?
  592. Fun and interesting question
  593. Respiration
  594. Biology PLEASE HELP!!! wot is m.lutea?
  595. Excited energy level
  596. Chemistry in the Real World - Super Quick Question on chemistry/pools
  597. Spontaneous Reactions and Molar Entropy
  598. Solubility question, please help
  599. Molarity
  600. reaction at the cathode
  601. The Enthalpy of MgO(s) + 2HCl(aq)
  602. Nuclear Energy Question
  603. Whats isoamyl???
  604. potassium permanganate and oxalic acid
  605. chemistry problems Moles
  606. Turbine Design Question
  607. acid-base stuffs
  608. Entropy and Equilibrium Constant
  609. Standard Change in Free Energy
  610. Le Chatelier's principle
  611. Huntington's chorea genotype - HH?
  612. percentage composition
  613. Spectrometer?
  614. "The Chemical Basis of Industry"
  615. techniques comparison
  616. Calculating Free Energy
  617. Are calories actually burned?
  618. Question check... calorie question
  619. need major help
  620. Surface Tension And Polarity Of Molecules
  621. "Exploring the Abyss"-- Food Webs of the Sea
  622. sunlight a catalyst for vitamin C oxidation?
  623. Sunlight a catalyst for vitamin C oxidation?
  624. Retrosynthetic analysis
  625. certain elimination reaction
  626. Determination of Faraday's
  627. Faraday's calculated
  628. Electrochemistry II. Electrolsis
  629. why Cl more active than Cl-
  630. what will be my bi-prducts
  631. Marine Biology- Waves and Their Characteristics
  632. solving for pH with diprotic/triprotic acids
  633. Sources of errors on Determinating Faraday's Constant experiment
  634. Reducing Agents and Standard Reduction Potentials
  635. IR spectrum help
  636. Organic Chemistry doubt
  637. Spin-orbit effects splits !?
  638. Organic Chemistry
  639. How do i explain this bond
  640. Transition Elements (Naming Substances) check answers
  641. rates of reaction
  642. Formation of compounds (Organic Chemistry)
  643. pH of a mixture
  644. Calcuations
  645. molecular formula
  646. heat of reaction
  647. Fick and Cottrell Law
  648. A rather simple prb.
  649. Chemical Equilibrium (answer check)
  650. Calculating Ksp of salt (answer check)
  651. Equilibrium question (check answer)
  652. excess reactant...
  653. Bond Dissociation Energies (BDE) help, please!
  654. Confused... please help
  655. lewis structure help
  656. calculations- molar concentrations PLS HELP
  657. Osmotic Pressure
  658. Industrial Preparation of Gases
  659. Therhelp !!!! modynamics and the equilibrium constant
  660. Could Somebody Please Help Me
  661. Question about a base
  662. Salt Dissolution Help
  663. Making Ethanol
  664. Nitrogen - Lab Preparation
  665. Acid dissociation constant
  666. Pleas help! Chemistry calculations
  667. need help with a topic discussed in class
  668. General Chemistry - gibbs free energy
  669. Acid rain
  670. pH calculation
  671. Motion, Forces, & Energy
  672. Electrochemistry problem ?
  673. Chemistry pH problem
  674. Quick question: Grade 12 stuff (Heat capacity)
  675. Real life application of thermodynamics: Heat transfer/capacity/energy
  676. Electrode potentials
  677. What is the relationship between the amu and the gram?
  678. Belousov-Zhabotinsky oscillating reaction
  679. SO LOST!...redox reactions
  680. How can I figure this out?
  681. Karyotypes
  682. Acids & Bases: Arrhenius, Brønsted-Lowry, and Lewis
  683. can someone help with this problem: Standard enthalpy
  684. Weight combination by percent
  685. Molecular and Ionic bonds
  686. electrochemical cells lab
  687. Redox Reaction
  688. Reacting Gases
  689. Polymerization Termination
  690. solubility product
  691. Joules help?
  692. Efficiency
  693. Solutions
  694. Chemistry help.
  695. Alcohol Combustion Which fuel is best
  696. Quick question-precipitate
  697. neutralization calculations
  698. Questions on HCl and H2SO4 reactions
  699. In desperate need of help!
  700. empirical formula?
  701. ferric oxide solubility
  702. [Biology] Nervous System
  703. Blue Bottle Demostration
  704. So lost on this problem-HELP
  705. Maximum Pressure over a Reaction
  706. pH Scales
  707. Can anyone help me solve this?
  708. Miscellaneous calculation with moles, mass and gas volume
  709. Entropy per unit mass question (ds)
  710. Gases
  711. "Acids, Bases, and the Chemistry of Taste"
  712. Chemistry II: Determining a rate of a Solid
  713. Enthalpy
  714. gene
  715. Few Chemistry Questions
  716. Solubility question
  717. Oxidation and Reduction
  718. manganese redox reactions
  719. Calorimeter help
  720. writing equations
  721. hybridization/geometry...
  722. iron ore extraction
  723. Integrated rate law
  724. Desalination of water
  725. Potential of Ag/Ag+ electrode
  726. Molarity to mass % (acetic acid)
  727. Neutralisation
  728. Heat of dilution
  729. Cathodic protection
  730. Chemical Reaction Between HF and H2O2
  731. Chemistry exam qn
  732. The Science of Everything
  733. ph and buffer solutions help
  734. fossil fuel?
  735. [Question]Fluorescence quenching and artificial photosynthesis
  736. Chemistry book for IIT JEE
  737. Calclulating pH/pKa's
  738. Equilibrium
  739. Atomic radii for irridium
  740. Radiation
  741. Im so lost in this Problem
  742. volume of pool acid
  743. Gps
  744. chemistry review questions-calculations
  745. Heat of Combustion
  746. Heat Transfer!!
  747. Help!! Asap!
  748. Heat of Mixing & differential enthalpy of dilution
  749. atomic symbols
  750. Neutralisation Cont'd
  751. Chemistry - Volumetric determination
  752. Molecule
  753. i need help on this.
  754. i need help on this.
  755. Mixture
  756. Numerical Chemistry
  757. Group VI elements
  758. Properties Of ionic and covalent
  759. Elements, Compounds and Mixture
  760. compound and molecule?
  761. Ionic compound
  762. Chemical rxn help
  763. Blanks in Mohr Titration?
  764. What is the Shelf life of Mustard and Sarin?
  765. How to convert boric acid to boric oxide
  766. Determining State of Matter for a Compound
  767. hydrophobic and hydrophilic
  768. equation for lactose --> glucose
  769. precipitation reactions
  770. Stoichiometry Help
  771. When to use double and when to use triple bonds?
  772. Mixture of saturated liquid and saturated vapor
  773. Physical properties
  774. alkalinity OH and free acid value CH3OOH
  775. [SOLVED] Ionization and light
  776. Dissociation Constant Homework Check
  777. gases
  778. Balance Half-Cell Equation
  779. Bleach Oxidation Reactions
  780. Enthalpy
  781. line spectra
  782. Corrosion experiment and Control
  783. Figuring sum of double bonds and rings ??
  784. Hello!
  785. brain activity practice exam question
  786. Amphoteric compounds-effect of pH
  787. ionic formulae
  788. chemical equation
  789. energy
  790. Chemical Reaction...
  791. Basic stoichiometry question
  792. Stoichiometry problem
  793. Stoichiometry Help
  794. compare concentrations
  795. electron configuration of cation
  796. (ceramics) probability P of site adjacent to diffusing species being vacant...
  797. (ceramics) transport number
  798. (ceramics) semiconductors
  799. Are these structures the same?
  800. pH and Concentration
  801. ionic equations?
  802. potassium alum
  803. Enthalpy of hydration
  804. vsepr
  805. Molecular Orbital Diagrams
  806. Packing of Particles
  807. Net Ionic Equation
  808. help with root mean square speed
  809. Adding Net Ionic Equations
  810. doubt about flourine and bromine
  811. just checking answer for effusion
  812. Drawing molecules
  813. Help with Chem rate of reaction problem
  814. ART'S ( assisted reproduction technology)
  815. pH of Hydroclauric acid
  816. Law of Conservation of Energy
  817. Dilutions
  818. Solubility problem
  819. Bonding etc.
  820. help
  821. Adding Acids or Bases to Buffered Solutions
  822. Ksp - Prelab help
  823. Which of these metals can be plated out from the solution by electrolysis?
  824. Redox Reaction
  825. Polarising ability
  826. Simple Problem help
  827. to oxidize and to be oxidized , the same meanings?
  828. Chemistry Help
  829. Percentage of NH3???
  830. moles please help
  831. Need Help In Logic / Natural Deduction
  832. Carboxyl acid strength and electronegativity... How do they relate??
  833. Isomerism
  834. trouble w/ calculations
  835. definition of pathogen
  836. Calculating the % error & maximum error
  837. I need help calculating the maximum pressure
  838. Dilution and gravimetric problems
  839. Titration Caculation
  840. Which one is the correct equation?
  841. how big is the world
  842. Arranging Chemical reactions into
  843. high tide
  844. i need help on Speed of reaction
  845. Reverse Reactions
  846. Differential Rate Law of Complex Reactions
  847. Need Help on a Few Chem Problems
  848. decayed plants
  849. Help writing a few basic formulae
  850. Bonding
  851. Bonding
  852. Dihydro Benzene is more polar than Dichloro benzene
  853. Banana Leaf Extract As A Glass Cleaner?
  854. Hybridisation - FeCl2
  855. Mtbe （c5h12o）
  856. Question: Solubility
  857. easy question
  858. Reactants of Photosynthesis & Respiration (as well as the product)
  859. Energy Source of Respiration
  860. Sources of Electrons
  861. Need some help on some Chemistry calculations
  862. Not sure what the question is asking...
  863. Quantum Physics
  864. Bio Question
  865. Molality Question
  866. Ionization energy and speed of electron
  867. Special Electronic Configurations
  868. Equation Help
  869. I need assistance on this chem problem
  870. Which elements "travel in pairs"?
  871. Need assistance with Gen Chem problem
  872. Conversion
  873. Chem. Lab
  874. Liters of CO2 produced by 8.4 g NaHCO3...
  875. Chem/phys question not sure what this is
  876. Relativity Theory
  877. [SOLVED] Viruses - Dead or Alive?
  878. Merchanics problem
  879. Chemical Kinetics
  880. 1 mol of co2 in NaHCO3
  881. Chem AP, High school help needed
  882. Identifying Intermediates in chemical kinetics
  883. HS AP Chem question - mass % of each compound in a sample
  884. Substance's Solubility, Acids, and Bases
  885. A pH question
  886. does water molecules exist in KOH(aq)?
  887. Organic Compounds
  888. One isotope of a metallic element has mass number 59 and 31 neutrons in the nucleus.
  889. Chemistry Math Help!
  890. Homework help
  891. Explain the sigma and pie bonds in hybridization?
  892. Chemical Equilibrium
  893. S.I. reportable form
  894. Ether and Motrin
  895. Calculating a reverse reaction
  896. 2 Questions:metling point in unsaturated fat; nerve impulses
  897. Avagadro number
  898. Marginal Benefit
  899. Chemistry - Net ionic equations, ionic solids..!
  900. Iron ppt? Inorganic reactions
  901. Finding the P of a reactant after t seconds
  902. Ranking Compounds By Polarity
  903. Viscosity
  904. Law of Multiple Proportions
  905. law of multiple proportions
  906. pleaz helpo me solve this chmeical calculation??
  907. Electrophilic addition, elimination and stuff like that
  908. LaTeX document
  909. really need help!!!!!
  910. Human Volume
  911. Difference quotients
  912. pKa vs solubility question
  913. Alternate Fuels
  914. help me
  915. Spectroscopy Lab Conceptual Question
  916. Biology - Osmosis?
  917. radioactive decay equilibrium when decay constants are equal
  918. reaction between CuCl2 + Al
  919. Copper electropurification
  920. Repulsive and Attractive Forces that influence chemical bonds?
  921. Inorganic Ligand Naming Question
  922. Need Help NAmimg-Organic Chemistry
  923. Intensity on IR-spectrum
  924. Question about osmosis and osmotic pressure
  925. Question regarding buffer
  926. Chem.
  927. Why do aspirin tablets taste sour?
  928. Creating periodic table w/ quantum numbers
  929. The shape of Copper Tetraamine Complex
  930. need a bit of homework help about % mass of elements
  931. % error --finding the accepted value
  932. Periodic Table question
  933. Need help on chemistry, solution problems.
  934. Chemistry - Specific Heat Of Metals
  935. Chemistry Help Please!
  936. Chemistry Help - Magnesium Carbonate decomposition
  937. How many atoms are there in 3.90 moles of sulfur (S)?
  938. I need help could someone please help me with this problem?
  939. What is the mass in grams of a single atom
  940. Just a simple question on a reaction...
  941. Electropolishing
  942. Bios
  943. Desperate Need of Help!!!
  944. Chem lab, check it over for me please?
  945. Chemistry - Gas Laws Problem 1
  946. lab help (chem 12 adv)
  947. Saturated Fatty Acids
  948. Packing density question (HCP/CCP/BC)
  949. Chemistry-Physical Changes and Intermolecular Forces
  950. Packing (HCP/CCP) comparing volume
  951. How many Cr atoms in 78.82 g potassium dichromate?
  952. Potassium Alum
  953. phase change calorimetry problem
  954. chemical reactions and stoichiometry
  955. Plz Help Asap
  956. Acid Base Reaction, please help
  957. Acid and Base Quesions
  958. Chemistry - Net Ionic equation
  959. Chem - freeze drying & equilibrium
  960. Chemistry Homework Problem?
  961. Chemical Reaction help?
  962. Strong/weak acids/bases and their salts
  963. Chemistry homework problem?
  964. Chemistry lab formulas?
  965. Pre-Lab Question
  966. Average Value
  967. Soil Physics: Mixing different soils
  968. Chemistry Pre-Lab Question
  969. Cis/trans disubstituted cyclohexanes help
  970. Finding the pH of TSP
  971. Chemistry: Make up of Tea
  972. Half-Life
  973. Why is H+ usually written as H3O+?
  974. Chemistry Ques. re: structure of organic compounds
  975. Toledo Placement Exam
  976. chem lab help..~!
  977. question on ionisation energy
  978. Quantum Chemistry question
  979. uncertainty in measurements
  980. Question on Gene expression!!!???
  981. acids/bases
  982. Moles of ions in aqueous solution
  983. polarity and distribution coefficient
  984. Emission Spectra for Elements and Compounds
  985. Air Bubbles
  986. Check Ochem reaction please
  987. Balancing question
  988. third part to a stoichiometry question
  989. weight percentage / stoichiometry
  990. Net Ionic Equations
  991. Environmental Science...help!!!
  992. Adding Back Spectator Ions When Balancing Equations
  993. Isoelectric Point
  994. insulin
  995. 2 chemistry questions
  996. Earth Science problem
  997. Geology Help
  998. Net ionic equations (NaOH; HCl; H2O)
  999. Calcium Carbonate CaCO3
  1000. weight %
  1001. empirical formula / checking an answer
  1002. two step: mass-mass question
  1003. Needed Heats of Formation
  1004. Chem Valence electron question
  1005. Astronomy question
  1006. Ionization Energy
  1007. molarity
  1008. Interesting Question About Classical Mech
  1009. The oxidation number of nitrogen in the following compounds.
  1010. Simple Question...probably making it harder than it is
  1011. hypochlorite and thiosulfate
  1012. de Broglie or Schrodinger?
  1013. Quick Question...not sure if im understanding what this question is asking
  1014. Confusion with the gas constant!
  1015. this lab is driving me crazy
  1016. Electron shell and subshell
  1017. Chem Lab "ID of Unknowns"
  1018. Wavelength question
  1019. Drawing Electron Promotion (Hybridization)-Question/Help
  1020. Diethylene glycol in WINE question help please CHEMISTRY gr 12
  1021. The Lewis/Structure Diagram of NOF3?
  1022. Redox Titrations question
  1023. pH and buffer solutions
  1024. Please Help Me this is Tough
  1025. Chemistry - Volumetric Analysis I can't do this
  1026. AND and OR circuits
  1027. Acid-Catalyzed Hydrolysis
  1028. Who can explain to me how they get the work?
  1029. Hiden. . . Chlorine
  1030. Intensive or extensive variables.
  1031. Acid-Catalyzed Hydrolysis
  1032. Please Help me with some Chemistry Questions
  1033. Empirical Formula for Magnesium Oxide
  1034. Stoiciometry. Finding mass and formula
  1035. Protonation of Halogens in PVC
  1036. Voltage question
  1037. molecular formula question
  1038. Biochemistry (Enzyme Kinetics)
  1039. What is the difference between structural isomerism and geometric isomerism??
  1040. How to calculate the pI of a peptide??
  1041. The synthesis of Deuterium-and tritium labeled compounds
  1042. Half-Reaction?
  1043. Most stable isomer
  1044. Chemistry Problem/puzzle
  1045. Urgent Help Needed!! (gases)
  1046. acid/base balancing question (given products)
  1047. A Foucaultian Genealogy of Exams
  1048. X=n?
  1049. does methanol or propanol release more heat?
  1050. Gas Chromatography
  1051. Help with structural formula and resonance structure
  1052. equilibrium
  1053. reactivity
  1054. Bohr energy equation and Ionization energy
  1055. oxygen absorber
  1056. CHEMISTRY: Nomenclature. HELP!
  1057. Standardization of An Acid
  1058. frequency question
  1059. quantum number / orbital question
  1060. Ideal gas help
  1061. Help with Stoichiometry and Volumetric Analysis
  1062. Blowing up hydrogen and oxygen falls under what?
  1063. Transition metal organometallics and the 18th rule
  1064. Eudiometry question
  1065. Net Ionic Correct?
  1066. Energy change to form KI(s)
  1067. Uncertainties and Averages
  1068. mass question - please dumb it down for me
  1069. Issue with Mass Loss in Experiment
  1070. How long does a cell live outside a living host?
  1071. Biology Help !!
  1072. Question on Emission Spectroscopy
  1073. beginner chemistry
  1074. another mass percentage problem
  1075. Chem
  1076. Enthalapy of Formation - HELP
  1077. Enthalapy of Formation - HELP
  1078. quantum number question
  1079. Basicity of certain sites
  1080. Why is this so?
  1081. Need help on a Chem Question...
  1082. Ideal Gas Law problem
  1083. Titration
  1084. Calculating empirical formula
  1085. Chemistry Lab- Flame Tests
  1086. bio/chem relation between pH and [H+]
  1087. naturally occurring acid base buffering system in an organism
  1088. Earth science, surface energy balance
  1089. light ray travel
  1090. naming organic compounds help plzzz
  1091. Gas mixture problem!
  1092. Chemistry - Limiting reagents
  1093. molecular formula
  1094. Enthalpy
  1095. Net Ionic Equation clarification...
  1096. Did carbon exist naturally in Earth?
  1097. Acid rain affect on the environment
  1098. Dehydration of 2-butanol
  1099. Specific Heat
  1100. Specific Heat
  1101. Help Now!! Amine Naming Urgent!
  1102. What chemicals are in generic 2 cycle motor oil?
  1103. Communication Project
  1104. Formula for "Heavy Paraffinic Base Oil"?
  1105. What makes one smarter than the other?
  1106. Can anyone explain me this question
  1107. Which of the following is a chemical reaction?
  1108. Actinomyces Israelii
  1109. valence electrons
  1110. Titration - Calculating the endpoint
  1111. Chemistry - Titration, Redox, Combining Equations
  1112. Net Ionic Equations!! Please help me out!
  1113. Net Ionic Equations!! Please help me out!
  1114. what is
  1115. Polyolefins
  1116. Redox Titrations
  1117. redox reactions
  1118. Specific heat capacity of cyclohexanone
  1119. Absolute Error calculation?
  1120. electronic configurations for ions
  1121. periodic table help
  1122. Need Help solving for X and Y in a molecule
  1123. electrochemistry doubts
  1124. Golgi apparatus
  1125. Quinine
  1126. Equilibrium
  1127. Principal Quantum Number
  1128. Accretion Time of Earth
  1129. Adding energy for enthalpies of formation by increasing velocity?
  1130. features in the molecular structure of a compound that affect solubility mp,bp.
  1131. Buffer action
  1132. Electromagnetic Radiation
  1133. How to calculate volume and thickness of aluminum?
  1134. Synthesis of Isopentyl Acetate question
  1135. Need Help please!!!
  1136. Naming Organic Compounds
  1137. Concentrations of Fe(2+) ions
  1138. Endoplasmic reticulum?
  1139. Blue Color from Copper (II) Ions?
  1140. molar mass of gas X... pls help
  1141. A limiting Reagent Problem: Check My work!
  1142. Pressure Question: Ideal Gas
  1143. Quick Question about Heat!
  1144. Balancing Vinegar and Baking soda equation
  1145. Dna and Protein?
  1146. Glucose anaylsis of sports drinks
  1147. Thermochemistry Lab: Need help on finding a suitable double displacement reaction
  1148. thermodynamics problem - need help
  1149. please help - chemical bonding and energy change
  1150. resonance forms and bond strength
  1151. energy and periodic trends
  1152. Covalent?
  1153. resonance of HCO3^- and sigma/pi bonds
  1154. resonance of HCO3^- and sigma/pi bonds
  1155. lone pairs on central atom
  1156. Noble Gas Configuration
  1157. Help lol
  1158. Number of moles = volume/molar mass?
  1159. Chemical equations help
  1160. Chemical Formula-Must Have Help Today!
  1161. HELP! Chemical Formula
  1162. Help!: Nernst and reversal potentials
  1163. I need help...
  1164. Ionization and electron acquisition help!
  1165. Nernst potential and reverse potentials
  1166. Chirality Questions - Need Answers Checked
  1167. Vle
  1168. magnesium nitrate is a salt?
  1169. Help?
  1170. Need Info On The Human Genome Project
  1171. Equilibrium Constant
  1172. Dehydration of Alcohols
  1173. Does anyone know the chemical formula of cheese?!
  1174. does this system have memory or memoryless??and why??
  1175. How to write an equation for buffer reacting with excess base?
  1176. Enthalpy of formation
  1177. Eukaryote Evolution
  1178. Quantum Numbers
  1179. Strong and Weak Electrolytes
  1180. Basic chemistry questions
  1181. "The Rate Law" in Chemistry
  1182. Chemistry Equations
  1183. kinetics of metals reacting with acids
  1184. Oxidation - Reduction with copper and zinc
  1185. ph calculations
  1186. Vapour Pressure and Henry's Law
  1187. Chemical equations
  1188. Need help with organic chemistry lab!!!
  1189. Coordinate Covalent Bonds
  1190. Chemistry problem
  1191. Hydrate and NaOH reaction
  1192. MOLE Percentage
  1193. Chemistry HW PLEASE HELP ME!!!!!!!!
  1194. Activation energy for oxidation of ascorbic acid.
  1195. please help me with my chemistry homework
  1196. What is this chemical formula of?
  1197. [SOLVED] Is there potassium in coffee
  1198. Margules' 3 suffix equations for binary solution derivation
  1199. atom model
  1200. history of cloning
  1201. My essay on the atmospheric boundary layer
  1202. My essay on evolution, please comment
  1203. Stearic acid problem
  1204. Nucleophilic Substitution
  1205. Preparation of Alkyl Halide from Alcohol
  1206. Redox reaction, changing a solution from yellow to blue
  1207. politics presentation on immigration
  1208. identifying a tertiary alcohol
  1209. Lewis Structure for IF3
  1210. liquid seperation of B-carotene and Chlorophyll-a
  1211. Bronsted acids and bases
  1212. Redox Reaction
  1213. Beetroot, pigment and temperature
  1214. redox
  1215. Organic chemistry problem
  1216. Energy levels and quantum numbers
  1217. how do u calculate the mass of a segment of atmosphere?
  1218. Gas Chromatography - relative retention times question
  1219. need help on organic synthesis
  1220. Reactions of hydrocarbons
  1221. Homework Problem. Gases
  1222. Chem, Gases
  1223. Cosmology
  1224. Chem question.. Please help..
  1225. Syncing something with a pulsar
  1226. Questions about West Nile Virus and W.N. encephalitis
  1227. Chem reactions
  1228. Just a Question... very confused
  1229. a question about oxidation
  1230. [BIO]Glocose&glycogen
  1231. Question on Hydrated Molecules
  1232. Hydrogenation of alkynes and alkenes
  1233. SO2 in NaOH
  1234. Titanium 2+ Ion electronic structure?
  1235. Determining gas flow
  1236. Biology Help!!!!
  1237. Grignard Reagents
  1238. Chemistry-acid base equilibria
  1239. Theoretical yield
  1240. (E)-4-hexen-1-ol
  1241. valance electrons please help!
  1242. Astronomy related angle question (more of a Trig Q)
  1243. Acetone derived from conventional petroleum?
  1244. shelf life of Jet fuel JP-5
  1245. stoichiometry help
  1246. Organic chemistry help
  1247. Questions In Electricity And Thermal Physics
  1248. Ionic Radius
  1249. Help Asap
  1250. Chemistry: Molecular Orbital Electronic Configs.
  1251. Enthalpy at constant pressure.
  1252. atomic radius
  1253. quick ionic radius
  1254. Scientific explanation of a chip pan fire + water
  1255. esimating delta S and delta H frim temp and Kb
  1256. calculation work required from change in pH
  1257. gas binary system vinyl chloride - water
  1258. Difficult AP Chemistry Question (Titration + Calculating Moles)
  1259. Suggestions for an equilibrium demonstration
  1260. need help for assignment
  1261. Chemistry problems (help please)
  1262. What is the chemical name for:
  1263. Aerospace Engineeering Experiments
  1264. Synthesis question! Hurray!
  1265. Ranking of the properties of these things?
  1266. I dont get it..help!
  1267. Acid&Base question.
  1268. Double replacement reaction question
  1269. Electrochemistry question!
  1270. need help for IIT-JAM
  1271. Does the volume of a soda have an effect on the pressure that comes after shaking it?
  1272. Compound Formulas
  1273. hi can someone please help me with couple of my lab questions .
  1274. what are the most number of consecutive double bonds carbon can have
  1275. feso4 is not a primary standard??
  1276. Heat of solution
  1277. Freezing point depression error
  1278. Hexagonal Closest Packed Unit Cell Height
  1279. Which has the larger radius?
  1280. Why mercury is liquid at room temperture?
  1281. omg Chem Titration help fast!!!!
  1282. Arrhenius Acid Definition
  1283. Acid dissociation constant
  1284. enquiry
  1285. Enquiry
  1286. Word and skeletal equations
  1287. Removing H_3O^+ ions from aq. solution!
  1288. Gas Law questions
  1289. Balancing Equations
  1290. Multiple proportions incorrect?
  1291. IUPAC name of a branched chain hydrocarbon
  1292. Carbon + Hydrogen
  1293. Why can sulphur lose 6 electrons while magnesium can't gain 6?
  1294. Astronomy Help with Spectrography
  1295. Isotope exchange
  1296. Electrochemisty/Redox Reactions Help Needed
  1297. Organic Compound's Mass from Vapor Pressure
  1298. Genetics Problem Question
  1299. pH question, I really don't get this!
  1300. dissolving weak acids
  1301. Why does copper wire work as a salt bridge in a voltaic cell?
  1302. Need Help with a Gen. Chem. Problem
  1303. Organic Mixture's Boiling Point
  1304. Tricky little bit of astro!
  1305. Calorimetry Problem
  1306. pH of a buffer solution
  1307. Predict pH of KBr solution (aq)
  1308. half equation problems
  1309. AIDS info
  1310. Molecular Orbital Theory
  1311. Half Life for a second order reaction
  1312. Protein synthesized (Chem) Question PLZ HELP
  1313. Chemistry Questions
  1314. Enthalpy change of reaction.
  1315. Chemistry - energy and photons, Lewis structures
  1316. calorimetry question
  1317. iso electronic question
  1318. need help :(
  1319. acids, bases and pH
  1320. Florine with water and aqueous Fe2+
  1321. Nuclear Chem.
  1322. Test tomorrow need help
  1323. Bathymetry, Sediments, and Plate Tectonics assignment
  1324. Few Biologoy Questions
  1325. Earth Science Quesetion
  1326. genetics question!
  1327. pH of a mixed solution: is this right?
  1328. Organic Chemistry
  1329. Questions on Ideal gas
  1330. Biolgy Final Exam help
  1331. Chemistry Help
  1332. Volume - Volume Calculations
  1333. Lewis Dot Diagrams
  1334. Biology (translation) extremely confused, final is tomorrow
  1335. Chemistry Acid Base HELP PLEASE
  1336. Stability Order
  1337. Gr. 11. Titration problem (check if my answer is right)
  1338. Help please.
  1339. Urgent! Help!
  1340. Liquid to deaden pain?
  1341. Absolute Zero
  1342. Chemistry Electronic Configuration
  1343. Is this right?
  1344. Why is that electron moving?
  1345. Can someone help me w/ this??
  1346. Hydroxide ion
  1347. biology question
  1348. Lewis Structures: Shapes and Hybridization & Molecular Orbital Diagram
  1349. a few AP CHEM exam questions
  1350. coursework help: the affect on a plant on the rate of photosynthesis
  1351. Volume of reactant?
  1352. Radius of an atom
  1353. Equilibrium Help!
  1354. Chemistry (polar or not)
  1355. Questions about Geology
  1356. Heat Transfer
  1357. hmm 1 question please ^.^
  1358. Fock operator for closed shell system
  1359. Likely Formulas for Substances
  1360. Complete the balanced reaction if it will occur.
  1361. Why not crushed by air?
  1362. Dobson units?
  1363. Chemistry regarding moles!
  1364. Colligative Properties
  1365. Difference..?
  1366. Molarity
  1367. Electrochemistry
  1368. Hekp with szabo book
  1369. Thermochemistry please help!!!!!!!!!!!!!!!!!!
  1370. how can we define the chemical property?
  1371. Chemical Reaction of Baking Soda during electrolysis
  1372. Hypertonic/Hypotonic
  1373. Conductivity
  1374. Finding rate of oxygen consumption
  1375. Molality
  1376. Reaction Order Question
  1377. Rearrangement Reaction
  1378. Electroplating of Cu and Zn
  1379. Half-life of tritium
  1380. Question on Lewis structures
  1381. Using molarity in stoichiometry problems
  1382. BIO Experiment involvin paramecia, c14, alcohol - Need some info
  1383. Need help with isotopes: Chemistry!
  1384. CAtaclysmic evolution! project ..help!!
  1385. finding the concentration of a gas (thermodynamics)
  1386. I Need Help Noww!!!
  1387. Sr. Project (K5-5th Grade) Science Website
  1388. QUICK EASY QUESTION!!?(brains not working!!)
  1389. Chemistry Solubility Question
  1390. equilibrium issues
  1391. chemical reaction
  1392. Limited Reactants Help
  1393. Rate Laws
  1394. need help finding andiagram of the internal camel
  1395. Silver Nitrate/Copper Reaction
  1396. partial pressure of SO2
  1397. mixing solutions - wrong answer?
  1398. using gas law to find moles of SO3 formed...
  1399. Recrystalization Lab
  1400. net ionic equations
  1401. Test me on organic chemistry
  1402. Electrochemistry
  1403. enthalpy and heat change
  1404. how to predict products in chemical reactions
  1405. Back titrations?
  1406. A few easy Chemistry Questions
  1407. scientific method help
  1408. quick easy bio ?
  1409. What reaction in a titration?
  1410. Back titration with Iodine
  1411. Determining correct pKas in organic chemistry
  1412. calculating enthalpy change
  1413. Simple thermochemical equation
  1414. radial wave function
  1415. How do they react?
  1416. Stereochemistry
  1417. quantum mechanics - probability of finding an electron
  1418. dative bond confusion (or coordinate bond)
  1419. Density of air
  1420. Empirical Formula
  1421. Stochiometry Question
  1422. Ring expansions:when do thy happen
  1423. Effect of pH on beetroot cell membrane permeability
  1424. Stoichiometry
  1425. Stoichiometry
  1426. Hybridization Question
  1427. Thermo Question - Fridge cycles
  1428. Net ionic equation
  1429. Effect of Carbon Content in Steel
  1430. chemistry molecular shapes prob.
  1431. percent dissociation
  1432. Freezing Point Depression
  1433. Find mass from mole frac and solution mass
  1434. Possible source of error in determining gas constant
  1435. Chemical Reactions - Redox and Acid/Base
  1436. how to name structural features
  1437. i need help on this lab question
  1438. density and freezing point
  1439. Econ Question - Inferior Goods
  1440. tricky equilibrium constant question
  1441. need help
  1442. Boiling Point
  1443. Solve for Demand
  1444. Molar Conversions
  1445. Where did oxygen come from?
  1446. Reaction involving copper (II) sulfate pentahydrate
  1447. Biomechanics Question
  1448. Chemistry behind the following tests
  1449. Compression of gasses
  1450. Ideal gas law problem
  1451. Combustion reactions
  1452. redox equations!
  1453. differences between natural element and built element?
  1454. Enzyme Question
  1455. Life Based On Enzymes Question?
  1456. Mendelian crossings problems
  1457. Electron Affinity/Ionization Energy
  1458. Calculation of dissolved total inorganic carbon
  1459. Biology Homework Forum
  1460. Chemical equilibrium
  1461. Mixture Component Problem
  1462. per mol of what?
  1463. Chemistry: Activation Energy (Arrhenius equation)
  1464. Is there any way I can differentiate electrical conductivity?
  1465. Redox Reaction
  1466. Electrochemistry and Half Reactions
  1467. Double Salts
  1468. Phase Change Prob
  1469. derive a rate law from a mechanism (rates of reactions)
  1470. Reaction Rate Question
  1471. Equilibrium Concentration
  1472. equilirbium question
  1473. Advance Genetic Problem (Plasmid:- pBluescript II KS/SK (+)..) help please
  1474. Sign of electrode?
  1475. Billionaire who is richer
  1476. heat of formation of nh4cl
  1477. i have my acids and bases test tomorrow, and i need help with a few types of problems
  1478. Air Flow
  1479. chemistry questions
  1480. Predict the reaction
  1481. Quick Easy Question, takes 5 seconds
  1482. Gas Laws and Pressure
  1483. Copper(II)Sulphate
  1484. biology problem (sorta physics like actually)
  1485. Positive Entropy
  1486. Moles of Iron and Copper Lab
  1487. chemistry problem, calculate percent ionization
  1488. Crystals of Nickel?
  1489. chem question plz help
  1490. Help with Biology Question!
  1491. Physical Chemistry problem,please help!
  1492. White/Green/Blue Vitriol
  1493. in chemistry }}}
  1494. Chemistry Indicators Problem
  1495. Organic compound
  1496. Quick Organic Chem Nomenclature Question
  1497. Chemistry Help - Urgent
  1498. Calculation of heat of hydration
  1499. Quantatative Analysis of LiCl and LiBr Mixture
  1500. i need some serious help here soon...Astronomy Binary stars
  1501. pH of solution
  1502. Biology - examples of enzyme Inhibitors
  1503. Variational theory
  1504. CHemistry...
  1505. ground state energy
  1506. Computational chemistry
  1507. What is a "vapor bulb thermometer"?
  1508. Questions
  1509. Activation Energy
  1510. Stoichiometry
  1511. Partial Pressure from decomposition
  1512. Helpppp!! Pleaseee
  1513. Quick Question About Keq
  1514. Acid/Base Chemistry
  1515. Helpppp!!!!
  1516. Determine symmetry group
  1517. I am Needing help with Moles
  1518. ΔH for Gas Phase Reaction
  1519. Calculating Empirical Formulae
  1520. determining lewis acids
  1521. General Chemistry Pressure and Rate laws
  1522. hydrostatic pressure
  1523. Exothermic / Endothermic
  1524. Chemical Equilibrium Stresses
  1525. Buffer Solutions
  1526. Oxides
  1527. Finding density
  1528. Chemistry - Quick Check, Please
  1529. Corrosion Of Iron - Differential Aeration Principle
  1530. need answer quick please
  1531. I have a Science Question for my HOMEWOrK! Please help o:)
  1532. Question Regarding Oxides
  1533. Chem 2: # of pi bonds in a molecule
  1534. chem question, homework due tomorrow
  1535. Thermodynamic potential question,help!
  1536. need serious help with these enthalpy of neutralisation calculations
  1537. Qualitative tests on aluminium - Help Needed!
  1538. Inorganic Qualitative tests on aluminium
  1539. Biomechanics - Momentum/Collisions
  1540. Why HF (hydrogen fluoride) is not soluble in water?
  1541. Generating dipole vector
  1542. stiochemistry practice problems! help
  1543. Chemistry - Gas Laws
  1544. Gas Laws and Stoichiometry
  1545. Co2 and Octane problem
  1546. Octet Rule
  1547. An organic synthesis problem
  1548. Homologous pairs
  1549. Drano!!!
  1550. sports science
  1551. i need some freakin help with this half-life problem
  1552. i cant figure out this acid base problem
  1553. Le chatelier's principle..HELP!!!
  1554. another le chatelier qs..need to make sure
  1555. are all exothermic reactions chemical changes?
  1556. why is Teflon oliophobic?
  1557. [ask] How to calculate the initial rates of the reaction 2NO + Cl2 => 2NOCl?
  1558. Analytical Chemistry involving buffer
  1559. Acid/Base question
  1560. need to identify mysterious element
  1561. finding emprical formula of compound CHON
  1562. Creating a Redox Table
  1563. Ammonium help
  1564. Redox Reactions
  1565. Calculating amount of precipitate that will form
  1566. Astronomy spectroscopic binary
  1567. a chemistry problem
  1568. a chemistry problem i need serious help
  1569. In the high altitude of Denver, the winter is cold. Explain why NO2 is formed in Den
  1570. the high altitude of Denver, the winter is cold. Explain why NO2 is formed in Denver
  1571. Solubility combined with Buffer solutions... ugh
  1572. Activation energy of bromate/bromide reaction in acidic solution
  1573. calculating moles, ratio, empirical formula
  1574. Rusting Of Iron
  1575. Making a Buffer Solution
  1576. Which of the following solutions result in a buffer ?
  1577. Buffer Question
  1578. molecular biology techniques
  1579. Titriation Calculation for Weak Acid, Strong Base
  1580. Nuclear Equation, not sure it its right...
  1581. Organic reaction
  1582. Bond Length
  1583. Critical Temperature?
  1584. Reactivity of Ketones
  1585. If you know the answer of these 5 Questios , please help me
  1586. titrating weak acid buffer with strong acid after the base is used up
  1587. Free energy
  1588. pH of buffer solution
  1589. Chem 102 Lab Question:
  1590. Redox reaction equation
  1591. Extended Essay advice
  1592. Weak base/ Strong acid pH
  1593. Balanceing equations PLEASE HELP!!
  1594. Reaction mechanism
  1595. Energy
  1596. Freezing a gallon of water
  1597. thermodynamics clausius clapeyon
  1598. Sulfuric acid and gold
  1599. Material Energy Balance / Thermodynamics Question
  1600. Significant Figures.
  1601. people who did Liver research
  1602. TDS ratio specific heat help
  1603. Quantum Numbers. Help really needed!
  1604. Enthalpy
  1605. Question...
  1606. Chemistry-Apirin Lab, question about phenyl salicylate
  1607. Molar Heat of Solution
  1608. Acetylene Combustion equation
  1609. Restriction enzyme math question
  1610. resonance structures
  1611. Physical and Chemical Changes
  1612. several questions about stoichiometry
  1613. Lewis Dot diagrams, need help.
  1614. Which are polar or nonpolar?
  1615. [Chemistry] How do you find the new concentration?
  1616. Protein used for energy
  1617. SiC producing question
  1618. Electricity - Half wave rectifier
  1619. Acid Base Titrations..
  1620. Half life
  1621. pKa of Phenol
  1622. What's the right answer?
  1623. Poisson_boltzmann equation
  1624. Solubility of KNO3
  1625. dehydrating cyclohexanol
  1626. Creating a Buffer
  1627. Nitric acid equation!!
  1628. pKa of phenol lab
  1629. half life (very very simple question)
  1630. Question about phenol and phenolate
  1631. calculate the formula weight for values of X
  1632. Equilibrium constant from thermodynamic values
  1633. - Chemical Equilibrium [Help] -
  1634. Questions about Diels Alder reaction
  1635. Higher Chemical Concentration = Higher Temperature of Precipitation. Why?
  1636. Question about rusting on iron nails.
  1637. Urgent! zincate formation!
  1638. HCl + Mg
  1639. Organic Chemistry Help (Sodium Borohydride Reduction)
  1640. Enthalpy of Formation
  1641. Using oxalic acid as a primary standard
  1642. Titration problem
  1643. stoichiometry
  1644. pH of buffer solution
  1645. Molar Enthalpy Change
  1646. Colligative Properties and such
  1647. Thermo question - final mass/entropy generation!
  1648. pH of solution
  1649. phosphate buffer
  1650. coursework help
  1651. Crystal Point Groups
  1652. critical radius
  1653. Gibb's free energy (very simple one)
  1654. Higher Chemical Concentration = Higher Temperature of Precipitation. Why?
  1655. Solubility with Common Ion
  1656. Question about E2 mechanism.
  1657. aldehyde in aqueous base
  1658. Standard Reduction Potentials of 1/2 Cells
  1659. Osteoporosis Effects Short Term vs Long
  1660. Electrochemistry question
  1661. [Chemistry] Membrane Potential
  1662. Drugs and Medecine - where can I study from?
  1663. Chemistry - Dissolving Precipitates
  1664. Simple pH problem
  1665. Hexagonal Close Packing (Why do I get c/a = 3^1/2 ??)
  1666. Enthalpy Change
  1667. [Chemistry] Another electrochemistry question
  1668. A simple unit conversion problem that I don't get.
  1669. Lewis Structure of These Molecules?
  1670. Calculation Molar of HCL 37%
  1671. Foods that prevent osteoporosis?
  1672. organic chemistry problem
  1673. Partial Pressure
  1674. describe the optimum temperature and pressure conditions for these reactions
  1675. describe the optimum temperature and pressure conditions for these reactions
  1676. Acid/Base Equilibria (hard, i think).
  1677. gas laws
  1678. What's a good catalyst for the reaction...
  1679. pH Citric Acid
  1680. bonds
  1681. Chemistry questions
  1682. Chemistry equilibrium question
  1683. melting point
  1684. Distribution Coefficient! Fun for all ages!
  1685. Chem 2: Molecular Equilibria
  1686. A buffer problem, I need serious help!!!!!!
  1687. a chemistry problem about blood
  1688. car engines
  1689. Titration Question...please help.
  1690. is this problem right
  1691. Crystal Field Model
  1692. AP Microeconomics question
  1693. [Help] Simple Genetics Questions
  1694. cubic equation for weak acid hydronium
  1695. A few basic questions
  1696. Organic Chemistry
  1697. Finding Literature Heat Capacity Values
  1698. Rate of reaction
  1699. Rate of Reaction
  1700. Can someone plz help me...
  1701. melting points
  1702. Calculating Ksp of PbCl2
  1703. q w delta T,U and H calculation
  1704. 1 Question???
  1705. Chemistry equations
  1706. Hess Law: Molar Enthalpy Change for Decomposition
  1707. Temperature of Equilibrium
  1708. Chemistry Help?
  1709. inertia and ke
  1710. Need help from a REALLY REALLY GOOD chemist
  1711. Initial reactioin rates?
  1712. pH of H3PO4 mixed with NaOH
  1713. Chemical Formula Hydrate Lab
  1714. chemistry equilibrium
  1715. Bragg angles
  1716. Question about chem?
  1717. How to determine if the mixing of two solution would result in buffer solution?
  1718. Mass balance/Charge balance
  1719. acetic acid + koh
  1720. Calcutating the volume of HNO3
  1721. Choosing an indicator?
  1722. ph of buffer solution
  1723. ph of (buffer + HCl)
  1724. Help me!!
  1725. calculating molecular mass of oxalic acid (diprotic acid) using only given #s?
  1726. Very easy atomic weight problem
  1727. [Chemistry] Calculation of Pt potential
  1728. help
  1729. Need a little push in the right direction...
  1730. Methanol process
  1731. Ideas for a Quick Physical Chemistry project...
  1732. Nautralization Reactions
  1733. Organic Chem - Synthesis of alcohols
  1734. Limiting reagent???
  1735. Help with Stat Mech HW
  1736. Significant digits in intermediate answers
  1737. ElectroChemistry
  1738. Normalizing molecular speed probabiliy distribution
  1739. Water Solubility
  1740. Physics!!!!
  1741. Help ASAP please! finding pH and pKb
  1742. Chemistry pH problem
  1743. Can someone help me to find the general trend or functional group name for the follow
  1744. is heat required for these processes to occur?
  1745. diversity questions
  1746. Thawing of meat in fur
  1747. hard emperical formula question for assignment
  1748. DNA family tree: who is the grandmother, mother, and daughter?
  1749. High School Chemistry HW
  1750. Nuclear Chemistry
  1751. Chemistry - Redox Question
  1752. Molarity
  1753. help Hess’s law
  1754. Ph and weakbase
  1755. Chemistry Final
  1756. Very Simple Question.
  1757. Frontier Orbital Theory
  1758. Determining conc of H2O2 by titration
  1759. Matching
  1760. Redox Balancing
  1761. Thermo Problem, desperate
  1762. biology - hardy weinberg theory
  1763. Calculating with Half Lives
  1764. Chemistry color of complex ions
  1765. Compressed 5% CO2 in tank
  1766. (very) nonstandard reduction potential
  1767. Why do we regain energy quickly after a workout?
  1768. Electron Affinity
  1769. Isopropyl Alcohol Electron Dot Diagram
  1770. Spin angular momentum?
  1771. I need help in assigning R/S stereochemistyr
  1772. Help with a chemistry lab-I suck at it.
  1773. Lattice Energy and the Born Haber Cycle
  1774. Lattice Energy and the Born Haber Cycle
  1775. net ionic equations helppppp.
  1776. Nerst Equation
  1777. Finding Hydrolysis Constant
  1778. chemistry help needed!
  1779. Oxidation Reduction Reactions
  1780. Biology: Solutions equilibrium
  1781. building a Electrolysis for water
  1782. how do satellites stay i space
  1783. CGI confusion
  1784. Help with lab!
  1785. Help with chem lab
  1786. p and q frequinces
  1787. Quantitative Biuret's test for protien
  1788. Chem 2, Cell diagrams for oxidation/reduction reactions
  1789. acids and bases
  1790. hygrogen compounds and states of matter
  1791. Calculating Ka
  1792. Geometric / Optical Isomers
  1793. precipitation!!
  1794. [Co(H2O)6]2+ + 4NH4SCN
  1795. population frequency
  1796. Is it possible to find uncertainty for water hardness?
  1797. Chemistry - Homework Help
  1798. Determining Interparticle Force
  1799. Chemistry - Homework Help II
  1800. A small high school problem
  1801. Chemistry Extra Credit Prob.
  1802. Chemistry Lab
  1803. If you could help come then ^_^
  1804. RICE Tables
  1805. helpppp.again.
  1806. equilibrium constant
  1807. Preperation of bromine gas
  1808. Questions about electrochem
  1809. Calculating the theoretical net charge
  1810. Genetics/ Probability Problems
  1811. gas laws question
  1812. AP chemistry 2006 Form A Questions
  1813. Energy
  1814. Chemistry Help
  1815. [Chemistry Lab] Isolation of Aldehyde and Carboxylic Acid
  1816. Mollier diagram and reversible/irreversible process...?
  1817. [Chemistry] Grignard Reaction
  1818. energy of electrons
  1819. Biology: Simple Transpiration
  1820. Complex species doubt
  1821. Quick help plzzzz!!! How much acid do I need to add?
  1822. Cannizzaro Reaction
  1823. Coulomb's Law
  1824. pH question (volume calculation)
  1825. Sophmore Highschool Chemistry
  1826. 10th grade chemistry
  1827. Balancing equations
  1828. Study guide question
  1829. Composite In Biomedical Field
  1830. autosomal and X-linked genetics problem!
  1831. urinary bladder
  1832. limiting and excess reagents
  1833. AP Chem 2007 Free Response
  1834. Grade 9 Geo Proj! Stem Cell Help!
  1835. Rate law for the reaction
  1836. Calculations
  1837. Calculations 1
  1838. Calculations 2
  1839. calculation...could somebody help me please?
  1840. Equilibrium (water and ethanol)
  1841. stoichiometry hlp
  1842. stoichiometry hlp
  1843. autotrophs
  1844. Equilibrium equations
  1845. Kinetics
  1846. Acid/Base System
  1847. Question about Jones Reagent
  1848. General organic reaction question
  1849. Simple Chemistry: Nitric Acid
  1850. equilibrium
  1851. Permaganate and Alkenes
  1852. Enthalpy
  1853. titration with Carbonates acting as bases
  1854. calculating population growth
  1855. Determine Rate Law For Chem Reaction
  1856. determine the heat of reaction
  1857. Easy calculation
  1858. hi! help me out with hydroxides
  1859. Dont know how to do this
  1860. Chemistry - Quick question about standard reductions of half-cells
  1861. simple biology :decomposers
  1862. Specific Heat: Chemistry
  1863. Exam Woes
  1864. vetro paste chemical formula
  1865. Guttation
  1866. Acetylation- acetic acid or acetic anhydride
  1867. difference between the bleaching action of SO2 and CL2
  1868. Bromination and Nitration
  1869. growing reactions
  1870. How do I answer these chemistry hydrate questions?
  1871. Nitrogen
  1872. Question #1
  1873. 3C2H2 + Cu2Cl2 and more
  1874. Acetic/Ethanoic Acid Foam
  1875. quick q - benzoic acid and % yeild
  1876. Questions..
  1877. Gibbs Free Energy
  1878. Simple Stioch
  1879. acidity/basicity of amino acids
  1880. Iodine Solution
  1881. Evolution-Natural selection types
  1882. solubility for hydrated calcium sulfate in HCl
  1883. Balancing acidic and basic equations
  1884. Hey, I'm new here and need some help...
  1885. Biology
  1886. Heating Calcium Chloride Dihydrate
  1887. HELP PLEASE!! Molar mass of unknown gas
  1888. Molar Mass of unknown gas
  1889. plz check my work... urgent plzzz
  1890. chemistry HELP
  1891. transitional elements
  1892. Lewis acid help
  1893. reversible?
  1894. Chemistry Homework
  1895. What is Eθ?
  1896. Electron Configuration
  1897. Predict the mechanism
  1898. predict the compound
  1899. Heat of Reaction Experiment, High school level
  1900. E.coli with minimal media problem, HELP!
  1901. Group 2 hydroxides question
  1902. monochloride compounds of the halogens!
  1903. explaining Gibbs Free Energy
  1904. Methods of measuring concentrations of lead
  1905. Aromatic Compounds and Acidity
  1906. Solubility
  1907. an electrochemistry question
  1908. Proton NMR - Spin-Spin Splitting and Multiplicity
  1909. still that electrochemistry question
  1910. Fission - Nuclear Reaction
  1911. Fission - Nuclear Reaction
  1912. Chemistry Correspondace help!
  1913. Chemistry Help
  1914. Structural Formulas for all the (C5H11OH) alcohols
  1915. Equilibrium equations and coefficients
  1916. EDTA Titration problem
  1917. Integral centers in Hartree Fock
  1918. peptide chains with ER sequences
  1919. History of DNA cloning
  1920. Hard water problem. How much CaCO3?
  1921. Three Acid-Base Theories
  1922. Acid or Base and Chemistry of Taste
  1923. Redox and Half Reactions
  1924. Roc Identification
  1925. understanding a dendrogram (no cursework)
  1926. Solid State Chemistry : please illustrate counting of octahedral, tetrahedral voids..
  1927. General Chemistry - Solutions & Intermolecular Forces (HW Help)
  1928. Solubility in Sulfuric Acid
  1929. acid base strength rationale
  1930. Gas Solubility
  1931. Chemistry: Henry's law of partial pressure of gas.
  1932. Theoretical Yield in Multi-Step Synthesis
  1933. Which has higher polarity, sec-butyl chloride or tert-butyl chloride?
  1934. Lowering of activation barrier
  1935. Polarity of Aromatic Compounds
  1936. half- rxns
  1937. Help Please...
  1938. Chemistry Help Please
  1939. Chemical Formula Addition ?
  1940. Friedel-Crafts Alkylation Question
  1941. Jones Oxidation
  1942. Chem II - Solubility & Boiling Pts.
  1943. CO oxidation
  1944. Aldehyde in Sulfuric Acid
  1945. Diels-Alder - faster or slower question.
  1946. Naming compounds
  1947. Naming and writing formulas of compounds...
  1948. Solubility of Amines
  1949. ICE table, esterification problem (just need work checked)
  1950. Carbon versus silicon
  1951. Acids And Bases
  1952. vdw distances
  1953. Basic qualitative acid/base question
  1954. Enthalpy of Formation vs. Bond Enthalpy
  1955. Functional groups
  1956. Grignard Synthesis - need help naming product
  1957. ur opinion on organic chem
  1958. Proton affinity via. Born Haber cycle
  1959. Bonding of HCL and HF
  1960. Berthelot Equation
  1961. Electrophilic Substitution
  1962. Size of imaginary frequency
  1963. Question regarding hydrophobic forces
  1964. dipole and fractional charge
  1965. equillibrium concentrations
  1966. Equilibrium, Solubility and Precipitates
  1967. Gas Stoichiometry
  1968. vapour-liquid system
  1969. change heat to cold?
  1970. Huckel approximation--pi-energy
  1971. IUPAC Nomenclature
  1972. Number of possible covalent bonds
  1973. Non-Adiabatic versus excited state
  1974. metallic lustre
  1975. Heat of Combustion help!
  1976. ILC chemistry course grade 12......
  1977. memorize alkanes for organic?
  1978. Mass spectrum-need 3 peak designations
  1979. Experiment Volumetric analysis - Acid base
  1980. Spectra of small molecule and computed spectra
  1981. Fractional Distillation and Normal distillation
  1982. Digestive Juice
  1983. Chemical Equilibrium
  1984. Chemical Energetics
  1985. Gas volume question
  1986. what material has the following composite?
  1987. Chemical equation
  1988. rusting assinment
  1989. Alcohol Isomer
  1990. err, 'kid' chemistry question. HELP!
  1991. Gen Chemistry Help?
  1992. Double checking organic chem mechanisms
  1993. Food slows down the absorption of alchohol??
  1994. Redox equations
  1995. Chemistry help
  1996. Spin quantum number
  1997. Iron(ii) and Iron (iii) Seperation
  1998. identifying the anode/cathode
  1999. Carbon dioxide output??
  2000. Can someone check my work? Neutralization reaction.
  2001. chemistry help...
  2002. Can anyone get me on the right track???
  2003. Can someone tell me why this method is wrong even though it seems logical?
  2004. Iupac
  2005. Can someone check this for me please??
  2006. highschool chemistry redox
  2007. Thermal methods of analysis
  2008. Preparation of benzylamine
  2009. Chemistry Organic Molecule Drawing Program
  2010. Regarding Equilibrium Constant
  2011. Piston Problem
  2012. Biology/Chemistry: pH Level and Ionizable Groups
  2013. Chemistry Lab Report Sample
  2014. Electrophilic/Nucleophilic aromatic substitutions
  2015. Help me
  2016. DNA/Codon probability question
  2017. stociometry problem
  2018. Spectroscopy
  2019. Miscellaneous Chemistry Problems from 2004 Australian NQE
  2020. Help! Why can't we see ultra-violet light??
  2021. standard enthaply of reaction
  2022. Help! Pipe sounds....
  2023. Why do pipes of different size and length make different sounds?
  2024. Can someone please explain simply what happens when you make ripples in a ripple tank
  2025. Mendelian Genetics questions:
  2026. Phenol
  2027. concentration/dilution problem
  2028. Concentration ion problem
  2029. degree of unsaturation
  2030. Chemistry- Forming Compounds
  2031. titration problem
  2032. spectrophotometry problem
  2033. successive dilution problems
  2034. state vs path function
  2035. finding the iodide ion concentration
  2036. another successive dilution problem
  2037. Chemistry Help
  2038. molar mass problem
  2039. AP Chem; Calculating energy released
  2040. what equation to use
  2041. thermodynamics problem
  2042. Chemistry: Converting density to molar mass given other values.
  2043. Gram negative bacteria and blood agar hemolysis
  2044. Thermo
  2045. Chemistry Pre-lab question about density...
  2046. Permanganate Ion and Glucose
  2047. Prove that (K)^(-1) = (C degree)^(-1)
  2048. Formulas and Reactions
  2049. [SOLVED] PCHEM/Partial Pressures Question
  2050. Biology Question
  2051. Biochemistry
  2052. Biogenesis?
  2053. Why Did The Dinosaurs Die Out?
  2054. Can I get my intro Bio problems checked?
  2055. Bioelectricity
  2056. Solution Stoichiometry
  2057. IUPAC nomenclature assistance request
  2058. Help with general astronomy
  2059. 3 Questions
  2060. Calculating Moles of O Atoms?
  2061. Human Biology Help-Apologies for Vagueness
  2062. Big Question!!!
  2063. What's it called? The tip of the water? Pic included
  2064. Cell Biology
  2065. Dilution Problem
  2066. Dilution problem
  2067. Chemistry - equation problem
  2068. Chem problem need help....
  2069. Chem Problem
  2070. Chem Problem
  2071. Chem Need Help
  2072. Need help with chem problem...
  2073. Kepler's third law help.
  2074. Experiment: Heat of Reaction... help!
  2075. Chem Stoich problem
  2076. Net Ionic Equation
  2077. Net Ionic Equation: Acid/Base Rxn
  2078. Calculate volume of object that is submerged
  2079. [SOLVED] recrystallization
  2080. Finding z @ STP
  2081. Isothermal and reversible expansion work problem (Physical Chem)
  2082. Precipitate
  2083. Absorbance and Concentration Question
  2084. Chemistry Exam: Least do I know!
  2085. [SOLVED] Punnet Squares
  2086. Organic Chemistry - Nomenclature Structures
  2087. can anyone help me with ny of these 4 genetics questions?
  2088. Naming benzene compounds
  2089. [SOLVED] Oxidation of secondary alcohols
  2090. Ions in chemical cells
  2091. Tap vs Bottled Water; Guidance Appreciated
  2092. [SOLVED] Lewis Reaction Questions (Organic Chemistry)
  2093. Balancing a Redox Reaction.. urgent
  2094. Bonding
  2095. Physical Chem help
  2096. lightin light bulb
  2097. standard entropy of formation
  2098. Stoichiometry and Yields
  2099. Insane AP Chem question, please help me
  2100. Re: Microbiology Hwk Problem, Calculating generation time
  2101. Materials/Chemistry Question - Weight % fractions
  2102. Chemistry Materials Question - Weight % Fraction
  2103. Isothermal titration calorimetry
  2104. Intro To Chemistry (Need Help)
  2105. Ligand-protein binding
  2106. [SOLVED] Finding percentage of carbonate in mixed sample titration
  2107. Density Problem
  2108. General Chemistry questions and kinetics
  2109. [SOLVED] Chemistry Problem
  2110. [SOLVED] Covalent bonding?
  2111. Chemistry Problem II
  2112. Chemistry Problem III
  2113. [Chem] Determining Masses from Concentration
  2114. [SOLVED] paper chromatography
  2115. Chemistry homework
  2116. [SOLVED] Oxidation #s For Zn(NO3)2 ???
  2117. Atomic mass number question.
  2118. Heat Released In Enthalpy
  2119. [SOLVED] Isotopes
  2120. HUMANITIES homework
  2121. [SOLVED] Problem on Gases and Gas Pressures
  2122. [SOLVED] Gases Problem
  2123. [SOLVED] Cross-linking polymers
  2124. Free radical polymerization
  2125. Another chem problem
  2126. Binary Mixture
  2127. Acid Base Titration
  2128. Help with Chemistry
  2129. Thermodynamics
  2130. Chemistry Gas problem
  2131. Ionic Strength....help
  2132. Neuroscience -- Action Potentials, Voltage Clamps
  2133. Using reagents to identify unknown substances
  2134. [SOLVED] Question
  2135. Forming precipitate in buffer solution
  2136. standard sample size
  2137. Thermodynamics - Piston Cylinder
  2138. Couple of problems left over from Chem homework I didn't get.
  2139. Stoichiometry
  2140. Solubility
  2141. Bomb calorimetry
  2142. Mass of a solution
  2143. Chemistry: Help with balancing
  2144. AP Chem. Bomb Calorimetry
  2145. Covalent Bonding
  2146. Chemistry Help - Using the Gas Laws
  2147. Ion Chromatography
  2148. Chemistry - Ideal Gas Law
  2149. Biochemistry Help :)
  2150. Pka and Solubility problems
  2151. Galvanized Steel Treatment
  2152. How to Calc molar concentration from Ksp
  2153. Chemistry - Gas Law Stiochiometry
  2154. Decomposition Equation Help...
  2155. Graphing the 1st Derivative on excel?
  2156. Calculating grams of Precipitate
  2157. [SOLVED] Astronomy Question
  2158. HCl preparation
  2159. Dilution Question
  2160. Calvin cycle problem
  2161. Some Titration errors
  2162. Chem Question
  2163. Composition of a Mixture by Acid-Base Titration
  2164. net ionic eqaution
  2165. [SOLVED] Calculate molar masses in excel
  2166. Balancing Redox Rxn
  2167. [Chem] Balancing Redox Eqn Any Diff from Regular? ..
  2168. Ideal/Combined Gas Law equation
  2169. pH effects on membrane permeability
  2170. confused about particle growth
  2171. Partial pressure question
  2172. Molecules from concentration
  2173. Using Henderson-Hasselbach equation?
  2174. Bayer Process
  2175. a multiple choice question about sustainable development
  2176. resources
  2177. Stoichiometry of a RedOx Reaction
  2178. difference between fibrous proteins and globular proteins
  2179. X-ray Formulas
  2180. Titration
  2181. Idea for a molecular biology-based, laboratory research plan
  2182. Salts
  2183. [SOLVED] Linkage isomer in complexes
  2184. Resonance Structures
  2185. CHemistry H2O vapour question
  2186. finding the magnitude difference between two star
  2187. Thermodynamic question
  2188. Can someone double check my answers for theoretical densities?
  2189. How Does Fermentation Rates Change With Different Types of Yeasts? (Biology Q)
  2190. Solution Prepartion
  2191. Genetics Questions
  2192. Genetics Questions
  2193. Chi-Square Test Crosses
  2194. Linkage And Mapping Of Genes
  2195. C programming
  2196. Buffer problem or not??
  2197. Buffer problem or not??
  2198. Calculating wavelength of light
  2199. chemistry help
  2200. Molarity
  2201. Polarity
  2202. Particle growth
  2203. London Dispersion Force
  2204. Biochemistry--Double check my answers please
  2205. Diffusion/osmosis, mitosis, and cellular respiration
  2206. Solubility Problem~
  2207. another solubility problem
  2208. silly math problem on precipitation
  2209. Electron Designations
  2210. Diverse Ion Effect Question
  2211. Any Suggestions for AP Chemistry Extra Credit Project?
  2212. VSEPR Question
  2213. Diverse Ion effect and Activity coefficients problem
  2214. Genetic Problem.please Help!!
  2215. hello everyone,i'm havin trouble with this genetics problem.any ideas?
  2216. Concentration problem
  2217. Weak Acid, Strong Base Titration
  2218. Bromocresol Green as an Indicator
  2219. Effect of pH on Amylase..Need help
  2220. Effect of pH on enzyme activity- amylase
  2221. [Chem] Ions' States of Matter when not in solution
  2222. Genetics - independent assortment and linkage
  2223. [CHEM] Simple stoichiometry problem help
  2224. Introductory of Chemistry
  2225. Stereochemistry
  2226. Dalton's Law question.
  2227. Photosynthesis Help
  2228. pH of phosphori acid... HELP PLEASE
  2229. pH buffer/unbuffered soln... please help
  2230. Hydrates
  2231. Lone Pair(s) : How to find?
  2232. Genetics problem
  2233. Extraction efficiency problem PLease help....
  2234. Problem
  2235. Nomenclature Of Complex Ions
  2236. spring constant of molecule
  2237. Physical Chem, work of a non-ideal gas
  2238. Molar mass of a Volatile liquid.
  2239. Total Water Hardness
  2240. Balancing Redox Equation
  2241. how can we run without falling over on uneven ground
  2242. Electron Configurations in excited states
  2243. Ground State of electrons
  2244. English Homework
  2245. H3PO4 Stepwise Neutralization
  2246. titration indicator
  2247. Hydroxynaphthol blue??
  2248. question on Selective precipitation
  2249. Chemistry
  2250. Freezing Point Depression
  2251. 9 Solution Problem Lab
  2252. [SOLVED] Distinguishing Between CO2 and Ar
  2253. [SOLVED] Thermochemistry
  2254. Gas problem.
  2255. Chromatography - Net Charge
  2256. A tricky question
  2257. Help!!
  2258. solution concentration and ppm
  2259. [SOLVED] What am I doing wrong? Thermochemistry
  2260. No clue, Thermochemistry
  2261. Enthalpy of Combustion -- Alkanes
  2262. Chemistry Homework
  2263. Last thermchemistry question
  2264. Introductory of Chemistry
  2265. Chemistry- Selective Precipitation
  2266. Verify Thermochemistry answer (no calculations)
  2267. ionic bonds in amino acids
  2268. Astronomy - Latitude and Longitude problem
  2269. Titration
  2270. Astronomy - Light Force
  2271. What’s the experimental evidence that calcium has to be present during depolarisation
  2272. What is the pathway by which Ca2+ ions enter the presynaptic terminal? (i.e. what kin
  2273. assuming [Cl‑]o = 150 mM and [Cl‑]i = 8 mM.
  2274. how to match single channel behaviour to whole cell current what would you do
  2275. [SOLVED] Chemistry For engineers: thermodynamics
  2276. Chemistry - interpreting Fractional Distillaion.
  2277. [SOLVED] biology question about plants
  2278. Help for Chem Problem,
  2279. Need homework help (Astronomy)
  2280. EDTA titration lab help
  2281. Water molecule
  2282. Avogadro's Theory
  2283. Biology Help
  2284. Ice and Water
  2285. fuel
  2286. Chem. Half-Reactions
  2287. Cyclic voltammetry
  2288. Help finding a chemistry help website.
  2289. Rf Values
  2290. Effective magnetic moment
  2291. Entropy Changes
  2292. analytical chem
  2293. [SOLVED] Determination of Vitamin C
  2294. Distillation Lab Question!
  2295. Combustion Train Analysis
  2296. Rate of Reactions?
  2297. Electrolysis
  2298. help with using Excel
  2299. Formulas from question that BATE pH calculator gave me
  2300. Energy and efficiency
  2301. [SOLVED] BiOchem lab DNA electrophoresis
  2302. [SOLVED] Chem Lab Help!!
  2303. Cyclic Voltammetry
  2304. chem lab - titration
  2305. Mass Spectometry Problem
  2306. Partial Pressures of ethanal and water!!
  2307. Negative Current
  2308. need answer....plz help me
  2309. Absorption by plants
  2310. Product of spin functions
  2311. help needed
  2312. Isomers, how do you know how many to draw?
  2313. Delta G of Dilution
  2314. Energy Change Formation
  2315. Bond
  2316. Bond Angle for compount Clozapine
  2317. Quick paramgnetic question
  2318. 1997 Ap Chem Free Response #9 Help
  2319. [SOLVED] Ion concentration
  2320. Logic question
  2321. Nuclear chemistry: BY and FROM
  2322. Need Help With Weather Homework Asap!!!!
  2323. What should the pH of a .121M KI solution be (electrochem lab)?
  2324. Stereochemistry, PLZ HELP!!!
  2325. Chem Test Review Questions (multiple chice) Need help ASAP, please!
  2326. objection against redi's experiment
  2327. Plants, cell communication, digestion, and circulation
  2328. E Cell Values!
  2329. Calculating the triple point of benzene
  2330. Long Titration Problem
  2331. heat transfer
  2332. how do you make hydrogen fuel
  2333. Chromatography: Please help!!
  2334. Physical chemistry problem
  2335. A quick problem
  2336. Phosphate Determination
  2337. hydrate problem :(
  2338. Organic Chemistry, Paula Bruice
  2339. Chemistry - Ideal gas equation question
  2340. HELP please!!
  2341. Identifying Objects in the Solar System
  2342. need help with A-Chem
  2343. What is combustion?
  2344. What is the E cell value for the following equation?
  2345. Gas Diffusion?
  2346. [SOLVED] solving the ideal gas law for volume --> length
  2347. Imagination and It's Stages
  2348. Help on amount of oxygen [dissolved] at equilibrium in an unknown sample
  2349. equipartition theorem and motion
  2350. refractive indices
  2351. [SOLVED] Interference of Sound Waves
  2352. Flame atomic emission question
  2353. [SOLVED] Converting Mol
  2354. pH problem weak acid and weak base
  2355. Help!!!! Now!!!!
  2356. Spectroscopy questions
  2357. Super quick error propogation question
  2358. Graham's Law Question (With Gases)
  2359. Largest lattice energy
  2360. Need Help With Acetaldehyde-Tollen's Reagent Rxn
  2361. chemical reaction
  2362. non-standard cell potential problem
  2363. electrochem question
  2364. Membrane potential
  2365. Nernst Equation
  2366. Chemistry - Adding Strong Acid to Buffer
  2367. Why exactly is this exothermic
  2368. net ionic equation
  2369. Converting Ocular Unit Magnification
  2370. Question about Noise vs. Music
  2371. Salt water solution
  2372. [SOLVED] Chemical Reaction between water and chlorine
  2373. Bonding Angles
  2374. electrochem-finding K
  2375. Iodimetric Titrations
  2376. Choosing a solvent
  2377. Hydreogen Peroxide LAB
  2378. Potentiometry lab question
  2379. Evaluation of Strike and the 3 point problem....
  2380. orgo lab - pka values
  2381. will this experiment work?
  2382. Kinetic energy and heat
  2383. Selective Reduction
  2384. Help please.
  2385. confused with moles
  2386. Photosynthesis Question
  2387. [SOLVED] molecular orbital model
  2388. Which base is stronger?
  2389. [SOLVED] Activity series
  2390. Thermochemistry combustion problem
  2391. Triethylene glycol + Dichlorotriethylene glycol
  2392. Selective Oxidation
  2393. Diffusion, isn't this the formula I'm supposed to be using?
  2394. Maximum Useful Work from a Fuel Cell
  2395. Ionic Strength
  2396. Gravimetric factor
  2397. Orbital Symmetry Controlled Reactions
  2398. Relative Half-Cell Potentials
  2399. Hybridization On Organic Molecule Salitoxin
  2400. pH problem
  2401. [SOLVED] electron density
  2402. Please help with pedigree charts
  2403. Working on polystyrene & graphite composite, interesting effect(s)
  2404. Molar Ratios- Help Please! 8)
  2405. [SOLVED] 8. When 15 grams of H2O decomposes how many grams of O2 are formed?
  2406. Air problem
  2407. [SOLVED] What affect does altitude have on boiling point?
  2408. A few questions...I'm studying for a test.
  2409. [SOLVED] Nernst Equation Applied to Half-Reactions
  2410. [SOLVED] Determine the mass of sodium chloride produced when 2.5 moles of chlorine ga
  2411. Multiple Choice Anyone? 8)
  2412. What is the probability that their 1st child will be albino?
  2413. Huntington's Disease
  2414. General Biology question ?
  2415. Having difficulty with Ox-Redox
  2416. [SOLVED] Isomers
  2417. Coordination Chemistry and Complexes
  2418. Multi-step Organice problem!!!
  2419. what will be the new volume?
  2420. Mole problems
  2421. Anyone know the equation?
  2422. Help!
  2423. Am I doing these right?!?!
  2424. [SOLVED] Ambiguous bonding question
  2425. [SOLVED] Help Please!! :)
  2426. Alcohol Combustion
  2427. Just brushing up on chemistry
  2428. Oxidation of MnCl2
  2429. Bond Order
  2430. Glycolysis & Creb Cycle...Biochemistry
  2431. [SOLVED] Gas Law Problem
  2432. Dilution Chemistry Problems...i dont get it >.<
  2433. Help, writing things like Alpha Decay in Chemistry?
  2434. transformation of bacterial cell
  2435. Calculating Final Temp of a mixture
  2436. Radioactive Elements - HELP!
  2437. Titration
  2438. How to find Electrons in CN-
  2439. Urgent Calibration/Concentration Problem
  2440. Gravitons
  2441. Symetry:
  2442. Organ Bath Problem
  2443. Organic chemistry
  2444. Help with writing a chem equation
  2445. Ligand integrin dimerization
  2446. General Chemistry -- Chemical Equilibria
  2447. AP Biology Genetics Punnet Square
  2448. Silly chem question
  2449. thermodynamics constant volume and temp equilib questions
  2450. Valence electron of CN?
  2451. [SOLVED] Hess's Law and Thermochemical Equations
  2452. [SOLVED] examples of bonding
  2453. Chem Lab Help: Equilibrium Systems
  2454. chemical equatio n
  2455. [SOLVED] Bronsted Lowry Proton Theory
  2456. Sulphuric Acid Catalyzing Esters?
  2457. atp synthase and gibbs free energy
  2458. [SOLVED] % mass by Vol problem
  2459. [SOLVED] directional bonding
  2460. Electron Configuration
  2461. [SOLVED] Temperature and Rate Constant
  2462. [SOLVED] pH of solution
  2463. Drop in Concentration as reaction progresses
  2464. Initial Rates Method
  2465. [SOLVED] Mass to Volume Problem
  2466. QM/MM vs QM/MD
  2467. Decomposition of cooper II carbonate hydroxide hydrate.
  2468. Objective Chemistry (2 questions)
  2469. determination of enthalpy of solution (solubility/temp stuff)
  2470. stoichiometry help
  2471. Stoichiometry
  2472. Calculating Freezing and Boiling Points
  2473. Fluoride Ion selective electrode measurements
  2474. Lattice Energy
  2475. [SOLVED] Empirical Formula
  2476. [SOLVED] structures
  2477. alcoholos and nucleophilic subst.
  2478. [SOLVED] Pressure
  2479. Help with Propanal formulas
  2480. [SOLVED] Stoichiometry Solving for unknow
  2481. coupled reaction
  2482. [SOLVED] More help on Stoich
  2483. [SOLVED] Last Stoich I swear
  2484. Chemical Kinetics - Rate Laws and Mechanisms
  2485. [SOLVED] Solving for molar mass
  2486. acid/base equilibrium tutorials!
  2487. (Bio} Calculating Aphid Population
  2488. chemistry
  2489. Chromium Oxidation State
  2490. Finding the mass for a calorimetry problem
  2491. [SOLVED] Half Life Help
  2492. [SOLVED] Amount in mol of compound ions
  2493. Copunds/mixtures
  2494. Energy in mixtures
  2495. Phase of matter
  2496. mixtures/solutions
  2497. Planck's constant and speed
  2498. Could somone explain me this question?
  2499. Specific Heat and the body
  2500. Enzyme kinetics question
  2501. grignard synthesis
  2502. fajans rule??
  2503. The position of the equilibrium altered
  2504. Metabolic pathways problems
  2505. Protein Hormones and Cell Membrane interaction
  2506. structure of molecules
  2507. neeeed help
  2508. [SOLVED] What is the enthalpy of combustion of magnesium?
  2509. Help BIOLOGY
  2510. Please Help In Biology Please
  2511. [SOLVED] chemistry question.
  2512. molarity question
  2513. supersaturated question!
  2514. pore pressure
  2515. Help me please this is very important!
  2516. strong and weak electrolytes-need help plzz
  2517. Gas Laws
  2518. [SOLVED] Physical chemistry problem
  2519. Where can I find Thermochem. tutorial?
  2520. Any reaction with asphalt and magnetized iron.
  2521. strong and weak electrolytes-need help plzz
  2522. Standard orgo
  2523. Can someone help me rank these?
  2524. Finding critical temperature from equation of state
  2525. [SOLVED] Chemistry - how to do oinic equations
  2526. How to derive radius ratio and calculate reaction energy
  2527. [SOLVED] boiling point
  2528. Microorganisms please help!!!
  2529. [SOLVED] Simple Grade 11 Question ! Help Please
  2530. C5h11oh
  2531. molecular formula of hydrocarbon
  2532. Enviro Chem.- simple ideal gas law calculation.
  2533. Biology
  2534. How would you prepare a 500 ml lab stock of:
  2535. Help with Half-Life and a First-Order Process
  2536. Help me out with electron configuration. :[
  2537. [SOLVED] Resonance Structure
  2538. Partial Pressure Problem
  2539. [SOLVED] Organic Chem - Resonance Structures #2
  2540. [SOLVED] Resonance Structure #3
  2541. Anyone know how to draw SO2 in marvinsketch with octet on all atoms?
  2542. Solid-Vapor Equilibrium
  2543. [SOLVED] Resonance Structures
  2544. Meiosis I Cell Division
  2545. Thermodynamics
  2546. Thermodynamics
  2547. EDTA titration?!!!URGENT NEED HELP
  2548. [SOLVED] Organic Chemistry
  2549. Chemistry solution colors question
  2550. Hydrocarbon enthalpy profiles
  2551. Conversion of Ethanol to Acetone
  2552. Compounds
  2553. Periodic table of the elements
  2554. AP Environmental Science Free Response
  2555. Law of conservation
  2556. Mixtres
  2557. URGENT QUESTION: Chemistry
  2558. Entropy Calculations ... homework help plz
  2559. Organic chem, resonance structure
  2560. Gas density
  2561. d-spacing
  2562. how to start this off ( chem ?)
  2563. Gen.Chem: homogeneous vs heterogeneous
  2564. Manometer problems.
  2565. what is their colective mass
  2566. Chemistry Problem
  2567. cumulative problem
  2568. cumulative problem 2
  2569. Help writing chemical equation
  2570. Supply and Demand Economics
  2571. pv = nrt / ideal gasses
  2572. Ice Calorimetry
  2573. Energy required for expansion into viscous environment
  2574. Amino Acid, Help
  2575. A level chemistry - ligands, d-block elements and complexes
  2576. Hcn + Hf --> ?
  2577. help with this chem question please!!
  2578. Chemistry : Atomic Orbitals
  2579. Bomb Calorimetry
  2580. redox reaction ferrocyanide
  2581. Thin Layer Chromatography
  2582. Acid-Base Equilibrium
  2583. [SOLVED] Osmotic Pressure &amp; Mass Percent
  2584. finding molarity when % by mass is known
  2585. Caculating a mass of product..
  2586. Clausius Clapeyron equation
  2587. Equilibrium and partial pressures
  2588. Clausius Clapeyron equation
  2589. [SOLVED] Titration Lab
  2590. Tracing the path of hydrogen atoms after the ingestion of glucose.
  2591. Vapor Pressure of Ethanol
  2592. Simple Algerbraic Manipulation is Confusing Me
  2593. Chemistry Experiments
  2594. find mass and volume
  2595. [SOLVED] Chemistry equilibrium Question
  2596. Mass problems
  2597. AMU Too many variables......?
  2598. Equilibirum constant
  2599. [SOLVED] vapor pressure
  2600. Total Frustration!!!!Radioactive Decay!!Need Fast Help!
  2601. dissociation energy
  2602. Inorganic Problem...
  2603. Biology essay on cell growth.. please help.
  2604. Inorganic problem...
  2605. Mole Concept
  2606. Action Potenials and Stimulation
  2607. Solubility of Sodium Benzoate
  2608. Titration problems
  2609. Equilibrium
  2610. Help in equillibrium problem with directon of net change
  2611. Van Der Waals forces
  2612. Resonance
  2613. electron withdrawing groups
  2614. Drift Velocity, TCR, and Atomic/ Weight Percentages
  2615. Buffer Solutions adding acid or base
  2616. Stoichiometry problem...
  2617. Enthaply of Solution
  2618. thermal physics: work and heat
  2619. Urgent help needed with volume calculation
  2620. HELP on Hardy Weinberg Problem!!
  2621. Reactions and Themodynamics Related Question
  2622. Reaction steps and Activation Energies
  2623. equilibrium
  2624. Reaction Problems
  2625. Determining Number of Moles Question
  2626. Scientific Method on Hypnosis
  2627. evolution and organic variation
  2628. Osmotic pressure!
  2629. Electrochemistry
  2630. Formulae
  2631. solving chemistry word problems...
  2632. [SOLVED] balancing equation in basic solution
  2633. [SOLVED] equilibirum and solubility product
  2634. Econ problem
  2635. Econ problem2
  2636. Finding the repeat distance in a Unit cell
  2637. Silicon half cell potential
  2638. Finding Ka from pH Titration Graph
  2639. genetic probability
  2640. [SOLVED] Secondary structure of protein.
  2641. [SOLVED] Biology Lab Abstract: Photosynthesis
  2642. Naming in hemistry
  2643. [SOLVED] Anticipated pH of Buffer Solution (urgent!)
  2644. Finding moles in a mixture
  2645. redox half reaction
  2646. Redox Titration - Determining the % of Iron II and Iron III
  2647. Redox Titration - Determining the % of Iron II and Iron III
  2648. 2001 free response Question [urgent]
  2649. Heat of Hydration????
  2650. Help Please
  2651. Sythesis of isopentyl acetate report questions
  2652. making up various concentraions of ethanol
  2653. (chemistry) equilibrium constent
  2654. Classifying Matter
  2655. equilibrium constant questions
  2656. Enthalpy change and activation energy
  2657. Chemistry: Noble metals, big need of fast help...
  2658. How many moles are in 1kg ice/water?
  2659. Chemical equilibrium: Enthalpies and equilibrium contsants
  2660. Net Ionic equation
  2661. Buffer Systems
  2662. Applicatino of Raoults Law and melting point
  2663. help with enthalpy
  2664. Polyatomic Ions
  2665. Gregor Mendel
  2666. gravimetric analysis of a carbonate
  2667. concentration
  2668. Biology; clarification of apple juice, help please!
  2669. Homework help for chemistry
  2670. density ?
  2671. pH curve and pKa
  2672. Thermodynamics - Entropy&Heat dispersion
  2673. stoichiometry Problem
  2674. [SOLVED] Activation Energy related to rate.
  2675. Why is kinetic energy NOT proportional to degrees F/C
  2676. Elementary Quantum Physics
  2677. Alkene reaction with Br2 and NaCl (saturated)
  2678. Fourth Dimension
  2679. Equilibrium
  2680. yeast cells vs. corn seedling
  2681. vapour pressure
  2682. fourfold bonds
  2683. Properties of Tsunamis
  2684. Amount of 6M H2SO4 to lower pH of pool from 7.0 to 4.0
  2685. Kinetics
  2686. Chemistry - acids, bases, equilibrium
  2687. Chemistry-Equilbibrium
  2688. Half-cell / reduction potential?
  2689. Stoichiometry
  2690. [SOLVED] Activation energy
  2691. [SOLVED] need help
  2692. need more help
  2693. equlilbrium constant
  2694. Isooctane combustion
  2695. Chemistry - Nomenclature
  2696. buffers
  2697. Name of non-ionic structural isomers of C2H7N
  2698. Mass Balance Problem - Help Please!
  2699. Buffer calculations
  2700. Calorimetry- how do I know the final temperature?
  2701. CaCO3 breakdown, please help
  2702. Maxwell relations with heat capacity.
  2703. Hybridized orbital scheme for H2O
  2704. Bomb Calorimetry
  2705. microeconomics
  2706. Acid-Base
  2707. What is meant when it is said that a molecule is excited?
  2708. Basic Stoichiometry Question
  2709. Molecular diffusion question; fick's first law
  2710. [SOLVED] Quick question regarding Ka and pH calculation
  2711. valence electron
  2712. Melting Points trend for Primary Alcohols
  2713. Organic Chem: Energy Barriers to Rotation
  2714. Rate Mechanisms
  2715. Hardy-Weinberg Equilibrium
  2716. [SOLVED] Trihybrid Cross Problem
  2717. very urgent question please help
  2718. Arrhenius equation
  2719. The Octet Rule
  2720. The de Broglie wavelength
  2721. The Heisenberg Uncertainty Principle
  2722. calculate the wavelength of an electron traveling at 1.12*10^5m/s
  2723. Pressure question
  2724. What is the value of n for the level in which the electron originated?
  2725. Equlibirum law
  2726. percent hydrolysis/percent ionazation
  2727. need ideas for chemistry paper
  2728. Is I-(aq) oxidized by air oxigen?
  2729. few simple questions about atomic structure and properties
  2730. Help with Titration lab needed
  2731. Chemistry - Finding Molecular Formula
  2732. please help fast!! NaBH4 reduction....
  2733. SOS: Finding pH in Buffer Solutions
  2734. Buffers - Titrations
  2735. Gauche Isomerism/Arrhenius Equation Questions
  2736. [SOLVED] need help with Bisphenol A
  2737. Microeconomic theory
  2738. Microeconomic theory part 2
  2739. Nitrate oxidation state
  2740. Organic Chemistry Question...Isomerism
  2741. TRANSITION state = > help !!!!!!
  2742. finding limiting reactant
  2743. limiting reaction
  2744. Lovastatin in dilute aqueous acid
  2745. common ion effect
  2746. common ion effect
  2747. Question Regarding Polar Protic Solvents
  2748. Biomed: Lead Vectors
  2749. Crude Oil
  2750. Use the experimental values to calculate the enthalpy change in the system.
  2751. Please Evaluate my answer (I feel im doing something wrong)
  2752. [SOLVED] scientific experiment lakoffs theory
  2753. the kinetic of the following reaction
  2754. Alkyl groups
  2755. Aromatic compounds
  2756. Buffer Solution question (mult. choice).
  2757. Which kind of graphing calculator should I buy?
  2758. Question which has me stumped...
  2759. Solutions - Heat of Solution
  2760. Entropy-increases & decreases
  2761. Predicting angle bonds
  2762. total mass of carbon...
  2763. using bond energies to calculate energy changes
  2764. producing ethanol....
  2765. Very Urgent: Need Help With Buffers!!!
  2766. cocentration and molarity
  2767. Endo or Exothermic?
  2768. Equilibrium constant
  2769. Property of Compound
  2770. Complex solubility problem ...
  2771. acid-base equlibrium
  2772. Enthalpy of Neutralisation Strong acid + Strong base
  2773. Chemical structure of Acetyl-Phosphate
  2774. function of Synaptic End Bulb
  2775. Biology lab help needed!
  2776. Another bio lab question!
  2777. % Composition & Finding Formula - Chemistry
  2778. Natural Deduction in propositional logic
  2779. % Composition and Finding Formula - Chemistry
  2780. organic chemistry II questions
  2781. Economics math problems
  2782. Activation energy
  2783. nucleophilic substitution question!
  2784. Meteorite dating question
  2785. Alkene diastereomers
  2786. OChem I Sn1 Sn2 Reactions
  2787. [SOLVED] Diel Alder rxn
  2788. Determining certain mass of a Hydrate
  2789. Rate of Glucose uptake by yeast cells
  2790. [SOLVED] Catalysts and Hydrogen Peroxide
  2791. Pros, Cons, and Moral Issues for Space Colonization
  2792. AAS of mercury in prescence of cobalt
  2793. Thermodynamics
  2794. P&D lab...esterification.
  2795. Boiling point depression?
  2796. Thermodynamics help
  2797. Precipitation calculations
  2798. Energy Assignment: need a step in the right direction
  2799. Structural isomers of C4H8Br2
  2800. molarity
  2801. equilibrium constant queations
  2802. pH of 8.57x10-10M HNO3 solution?
  2803. (Biology) Cell Transport Methods & Mitosis in Animals
  2804. [SOLVED] Redox titration help
  2805. solubility in base
  2806. dative bondig
  2807. More Nuclear Equations
  2808. Empirical Formula
  2809. Standard gibbs reaction energy
  2810. Complete Net Ionic Equations
  2811. [SOLVED] mechanism of cyclohexene
  2812. [SOLVED] Cobb-Douglas functions in economics
  2813. methane, bonding, and more...
  2814. The bodies homeostatic responses to excercise
  2815. [Biology]Orientation of microtubules
  2816. Half equations
  2817. Organic solubility question
  2818. Analytical chemistry Problem
  2819. pH after titration of Weak Acid with a Strong Base
  2820. phenylamine ammonia basicity
  2821. Electrochemistry - Nernst Equation
  2822. Equilibrium Potential of Half Cell
  2823. Industrial uses for Jones Oxidation?
  2824. Basic Mole Concept Questions, Grade 11 Chem
  2825. Empirical Formula
  2826. Heating hydrates
  2827. Chemical , Pericyclic Reaction
  2828. aqueous solutions
  2829. polar molecule...
  2830. concentration of hydrogen ions...
  2831. ionic and covalent bonds...
  2832. Help with TITRATIONS URGENT!
  2833. AP Chemistry -two interesting questions -- PLEASE HELP!
  2834. 2 interesting think questions...
  2835. quantity of heat absorbed or released...
  2836. Buffering capacity experiment
  2837. Standard light sources
  2838. Ester reaction with sulfuric acid
  2839. [SOLVED] Photosynthesis
  2840. [SOLVED] Reaction Mechanism (Shouldn't Be Too Difficult)
  2841. Population Genetics: Inbreeding
  2842. Intermolecular Forces
  2843. Leaf Pigments
  2844. Pressure
  2845. Gibbs Free energy
  2846. Chemical Equilibrium
  2847. AP Reaction equations
  2848. Paper Chromatography
  2849. tough electrolysis question (really!!!)
  2850. Determine amount of glucose-1-phosphate & glucose-1,6-diphosphate
  2851. Electronegativity
  2852. Determining coordination sphere from UV, CFSE
  2853. Chemistry: would someone verify my work, please?
  2854. Chemistry: Moles
  2855. Social Relevance Chemistry
  2856. Photosynthesis
  2857. Biochem practice exam help - Test tomorrow
  2858. Percent Yield in Moles
  2859. Time Traveling
  2860. Alkyl Halides...
  2861. Calculating the concentration of sodium hydroxide using calorimetry
  2862. MOL question
  2863. Need help with take home test
  2864. Determine size of planet's core by distance S-waves travel
  2865. Chemistry: Atomic Orbital
  2866. Chemical Equation
  2867. Acid Base
  2868. Investigating the loss of nitrogen, as urea, from the body
  2869. Wobble Hypothesis
  2870. Chemical Reactions
  2871. Electron Config of Mn +4
  2872. Detemination of dissociation constants of weak acid
  2873. Detemination of dissociation constants of weak acid
  2874. Empirical Formula
  2875. Internal Energy of Natural Gas
  2876. Equilibrium and pH
  2877. [SOLVED] Hiv
  2878. (chemistry) entropy
  2879. [SOLVED] Hiv
  2880. Aids
  2881. Dna/rna Strands
  2882. free-radical bromination of propane in the presence of chlorine
  2883. Subshells
  2884. Steady Flow Equation
  2885. Electromerism
  2886. [SOLVED] Le Chatelier's Principle - What is an equilibrium shift?
  2887. A few of questions about DNA
  2888. chemistry: buffers and pH
  2889. Partial Pressure/ICE Chart
  2890. [SOLVED] Pressure/Mass Relationship
  2891. calculate crater diameter
  2892. Outreach activity/demo- pharmacy
  2893. Genetics Problems- some help
  2894. Finding Activation Energy From Arrhenius Plot
  2895. Ionic equations and Spectator Ions question REALLY SHORT
  2896. [SOLVED] Percent of solution
  2897. Ionic equations and Spectator Ions
  2898. Specific Heat
  2899. Lit value for standard enthalpy change of formation for aqeuous HCl
  2900. [SOLVED] Enthalpy of a Reaction
  2901. [SOLVED] BioChem Amino acid
  2902. Chlorine production
  2903. How to determine the product of a Chemical Reaction.
  2904. what's differance between J-shape cure & S-shape curve
  2905. molecular diffusivity
  2906. Vapor pressure
  2907. Genetics problems- punnett squares
  2908. Genetic variation question
  2909. using density to find the % composition of an alloy
  2910. Ligands
  2911. Organic question
  2912. electrochemistry easy question
  2913. Arrhenius equation (chemistry)
  2914. Forming precipitates...
  2915. Strengths of Acids Problem
  2916. Moon or mars conolization?
  2917. Biology - Frequency of allele problem
  2918. Experimental Molecular Weight higher than Literature Value
  2919. Release of Heat in kJ - Immediate Help Needed
  2920. [SOLVED] Energy Question
  2921. conductivity of organic compund
  2922. [SOLVED] free energy of formation
  2923. Chemical equilibrium
  2924. Help needed with reaction equation
  2925. acid rain titration problem
  2926. augmentin question
  2927. Biotechnology: Plasmids
  2928. [SOLVED] Hydrogen bonding
  2929. Avogadro's Law and Ideal Gases
  2930. chem h.w quest
  2931. [SOLVED] Electronegativity Confusion
  2932. [SOLVED] Acids, Bases, and Salts
  2933. Can anyone ''write'' this reaction: oxidation of vitamin c with potassium biiodate?
  2934. Electrochemistry Essay Question
  2935. Help: Zn and HCI reaction rate.
  2936. Help with a Primary Standard Equation
  2937. Products of this reactions?!?
  2938. Help please!
  2939. Which compound is LESS stable?
  2940. electron configuration for ions
  2941. any ideas?
  2942. E=mc2 and nuclear fission
  2943. iron 0-phenanthroline complex
  2944. Why does the OH react with HA and not H3O+?
  2945. Organic: How is nucleophilic addition to a carbonyl carbon possible?
  2946. Kinetics of Radioactive decay
  2947. [SOLVED] Electroplating
  2948. new fuels
  2949. question of enthalpy of vaporization the diference from ln to log
  2950. Naming of complex ion CuCl4^2-
  2951. HELP!!! Antibody vs Immunoglobulin
  2952. chemistry problems
  2953. [SOLVED] Electrolysis, factors=&gt;n(product)
  2954. [SOLVED] Equilibrium and Highest [A]
  2955. [SOLVED] Electrolysis, coating
  2956. Does the reaction between H2SO4 and NH4OH produces ammonia?
  2957. Finding pH given molarity and volume
  2958. equilibrium
  2959. glycolysis
  2960. [SOLVED] Electromagnetic induction
  2961. Chemistry - titation with old and new H2O2
  2962. Thermochemistry Problem
  2963. I need help with a quick homework thing
  2964. Chemistry Clock Question
  2965. Questions...Chiral centers,Markonikov's rule...
  2966. Acidicity of KMnO4
  2967. koopmans theorem
  2968. Hubble's top ten discoveries
  2969. Vitamins
  2970. Please Help Check My Problems/Solutions (asap)
  2971. Melting Points...
  2972. Organic Chemistry: acid pKa of a substituted phthalic acid
  2973. Diesel viscosity at 25*C
  2974. [SOLVED] An individual's Gamete production.
  2975. Effect of changing pH of pepsin on hydrolysis
  2976. Isomers of C5H10O
  2977. I want experience of corrosion
  2978. Gibbs energy.....help......
  2979. Chem word problem
  2980. i need book has big book how has big database
  2981. can any one how make amine asid
  2982. Formalise DNA
  2983. Antibiotic Resistance in Bacteria
  2984. Tuberculosis Treatment
  2985. Nerst Equation (Electrochemistry)
  2986. ACS gen chem exam question
  2987. combustion of natural gases
  2988. Symbolic logic, need help with truth table definition
  2989. Electron configuration
  2990. Investigating the loss of nitrogen as urea from the body.
  2991. Equilibrium
  2992. Molarity/redox reactions
  2993. hw help diffusion of gases
  2994. Chemistry - Equilibrium
  2995. Heat of formation?
  2996. [SOLVED] Luminol and synthesis (mechanism of the reaction)
  2997. [SOLVED] Equilibrium
  2998. Rearrangement for elimination reaction
  2999. [SOLVED] Blast furnace and oxygen converter
  3000. [SOLVED] Coal liquification
  3001. Molar mass of acetone
  3002. [SOLVED] Solubility Thallous Chloride
  3003. C4H8 isomers?
  3004. Molecular shape
  3005. Chemistry: Hot-Air Ballon Oxygen Storage
  3006. pH of a salt
  3007. Electrochemistry
  3008. hydrocarbons
  3009. auxins experiment Thanks :)
  3010. [SOLVED] Mass Spectrum * Fragmentation:
  3011. Color of solution
  3012. Determine property of solution
  3013. Need Help with Chemistry!
  3014. Half-Life
  3015. plasma membrane
  3016. Need help with a project involving heavy metals
  3017. Need help with a project involving heavy metals
  3018. Moles
  3019. Gen Chem
  3020. languages
  3021. Salt that gives basic solution
  3022. Quick Question
  3023. How to find the integrated rate law?
  3024. What causes the H bonds in water molecules to last only 10^-11 sec?
  3025. VSEPR model
  3026. electromagnet that plug into wall outlet???
  3027. Cant stand the heat???
  3028. Calculating equilibrium constant
  3029. quick question about equilibrium of a reaction
  3030. Help finding moles of pain killer/moles of hydrogen ion in a pain killer w/ titration
  3031. Molarity vs. molality
  3032. Mass Ratio to Mole Ratio
  3033. Please Help Me With Ap Microeconomics
  3034. Composition of hydrates
  3035. potvirus inclusion bodies
  3036. [SOLVED] Temperature/Metal Help
  3037. Half equation for S2O32-/S4O62- couple
  3038. Anti-hero anyone?
  3039. Reducing the activation energy
  3040. Types of bondings
  3041. Modelling the Earth's Magnetic Field
  3042. Boiling points and hydrogen bondings
  3043. The ideal gas law
  3044. Change in enthalpy and entropy
  3045. Equilibrium problem involving cube root
  3046. Vinyl
  3047. Linked genes
  3048. Hybrid orbital
  3049. chlorides
  3050. preferential meta para and ortho positions substitutions.
  3051. Stochiometry
  3052. Gause's Struggle for Existence
  3053. Nuclear Binding Energy, Fission and Fusion
  3054. Hardy Weinberg problem plz help
  3055. Which one has a greater concentration, 1 molar NaOH or 1 molal NaOH aqueous solution?
  3056. Milk analysis? investigate the proteins
  3057. learning inorganic chemistry
  3058. catalytic oxidation of ammonia
  3059. [SOLVED] Aluminium Hydroxide as Amphoteric Substance
  3060. Electrochemistry; redox potential
  3061. Please help me with these questions!!
  3062. Rates of reaction
  3063. [SOLVED] Water solubility of benzoic acid
  3064. sulfur trioxide hybridization?
  3065. [SOLVED] pH question....
  3066. AP Biology Project
  3067. penicilin molecule
  3068. manufacture of bromine
  3069. please help!! :)
  3070. Redox Titrations?
  3071. Molarity vs. Molality
  3072. Measurement of acetylcholine by pH change
  3073. How much OH- must be added to achieve desired pH?
  3074. Physichal chemistry ideal solutions
  3075. Diamond vs. Graphite
  3076. Simple Gas Laws Question
  3077. What are the colours of Chromium in solution?
  3078. [SOLVED] Do Harp Seal populations effect Atlantic cod?
  3079. trivial question about chemical rxns
  3080. Mg reaction with Ethanoic acid....
  3081. Reaction between Na (s) and water
  3082. [SOLVED] pH of buffer solution
  3083. Phase Changes
  3084. radioacitve decay series (3#) types of equilibrium
  3085. Xray reflection
  3086. CHEMISTRY: acid/base equilibrium
  3087. Reaction that does not reach equilibrium
  3088. Chem Help!
  3089. Reaction for G-3-P oxidizing to 1,3-BPG
  3090. Meiosis Poems
  3091. Integrating the first order rate law
  3092. Can electrostatic forces explain electron configurations?
  3093. carbon oxygen bond stability?
  3094. Producing Methane from Hydrogen
  3095. Say your given a Compound.......
  3096. atomic radii question
  3097. Phosphorus with 5 covalent bonds
  3098. Pop. Ecology r and K strategists plz help
  3099. Redox reactions - general question
  3100. Help with moles
  3101. increased melanin production
  3102. Acidity Trends
  3103. gasoline/energy question...PLEASE HELP!!!
  3104. Kw of Water
  3105. Equilibrium Problem
  3106. sp3, sp2 carbons
  3107. 2 questions about ionic bonding
  3108. Acid strenth of aromatic organic molecules
  3109. Equilibrium Precipitate
  3110. Molarity of a dimer
  3111. Physical Chem Question - Xrays & Crystals
  3112. Finding molecular formula
  3113. rate law confusion.
  3114. Identifying the strongest acid
  3115. Organoclay-polymer interactions
  3116. Finding the emiprcal formula
  3117. Solubility of lead (II) chloride
  3118. conductivity with soluble salts
  3119. Niobium's 5s subshell unfilled?
  3120. help needed
  3121. Reaction mechanism
  3122. The Law of Mass Action explained
  3123. Mendelian Genetic problems
  3124. Genetics: Bacterial Genetics and Specialized Transduction
  3125. Is it true you can only add H to an alkene?
  3126. fermentation
  3127. bond energy
  3128. Relation Between Organ Systems
  3129. Chemistry Quiz Check
  3130. Water-powered car?
  3131. Mapping a chromosome segment
  3132. alkaline phenol + chloroethanoic acid
  3133. kinetics/reaction rate
  3134. Biomolecule
  3135. Acids and Bases - Buffers
  3136. Just a qn on Gravimetric analysis
  3137. Hydrogen, Deuteruim, Tritium
  3138. Determination of effects of sulphation on lead-acid batteries
  3139. Sn1 vs. Sn2 Mechanisms. Strong or Weak Nucleophiles?
  3140. Chemistry 12 - Keq & equilibirum - QUESTION
  3141. Electron Configuration
  3142. Analytical chem help
  3143. Please help me with a few synthesis problems...
  3144. Please help with a few orgo synthesis problems.
  3145. equilibrium constants
  3146. Cubic Lattice Atom Diameter Calculation
  3147. move a pi bond into a cycloalkane
  3148. pH of methylammonium bromide
  3149. chemistry help :]
  3150. What effect does hydroxylamine have on peroxidase?
  3151. density
  3152. electromagnetic spectrum
  3153. Estimating the expected yield of a chemical reaction
  3154. Flashing Blend Dyes? Plating dyes?
  3155. Genetics gene problems..
  3156. Golgi Bodies in cells
  3157. Carbon Di Oxide Lattice
  3158. Anyone want to check my chemistry quiz?
  3159. Glucose/Fructose
  3160. The Combustion of D-LSD
  3161. Questions: about the force of gravity.
  3162. Oxidation State of chromium
  3163. electrode potentials
  3164. Energy needed for the electrolysis of water
  3165. I need help with my chemistry problems
  3166. Q. Ch2=c=o + Ch3ch2oh = ?
  3167. deformation experiment
  3168. Writing Formulas
  3169. Chem. Prob.
  3170. Econ homework Supply/Deman
  3171. anode vs cathode???
  3172. Glucose/Fructose
  3173. Zeolite Analysis! (stuck on ions)
  3174. Chemistry/physics--molar heat capacity?
  3175. I need your help about holographic 3d images
  3176. Travel to Another Dimension
  3177. Lewis Structures and Resonance
  3178. etching graphite
  3179. Dynamic equilibrium (I though I understood now went blank again)
  3180. HOCl+allyl alcohol=??
  3181. Chemistry - analyzing equations
  3182. Microscope questions
  3183. Mass Spectrometry
  3184. mass-volume-pressure relationship
  3185. Redox Reaction Problem
  3186. what is the relationship between Kc and Kp?
  3187. determining intial rates of reaction
  3188. how to find equilibrium pressure when volume changes
  3189. geometrical optics
  3190. Periodic Table
  3191. Not really understanding p orbitals
  3192. Electron Configuration
  3193. Empirical Formulas
  3194. Ideal Gas Law and Isobaric Processes
  3195. Solution Pressure of Nitrogen Gas In Diesel Fuel
  3196. calculating concentrations
  3197. Find molar absorptivity given the following
  3198. Many organic related
  3199. determining OH- and pH of a weak base
  3200. helping socierty
  3201. Econ question
  3202. Sensation of weight of objects
  3203. How to calculate
  3204. Please help
  3205. Electrochemistry - Standard Cell Potentials
  3206. What would happen in this electrolytic cell?
  3207. Please help
  3208. Writing Equations
  3209. chemical equilibrium problem pls help reply soon plss
  3210. Acid/Base Problem PLSSSSSSSSSS help
  3211. egg question
  3212. thermodynamics..please help me with this problem..
  3213. Calculation of molarity - please help
  3214. Redox equation: confirmation
  3215. Calculating Response Factors
  3216. Calculating a standard potential
  3217. Finding out % of As2O3 in a sample
  3218. Question regarding AES
  3219. Easy CHEM problem
  3220. EDTA Titration calculation overlook needed
  3221. Chemistry Extended Essay Help!!
  3222. Ionic concentration / number of ions
  3223. Optical density and dilution
  3224. Organic Chem - Hydrocarbon Naming
  3225. galvanic cell
  3226. Difficult mechanism problem..help
  3227. What is a linear salt gradient?
  3228. [Chemistry] Number of grams
  3229. pl and pKa
  3230. equilibrium reactions with iodine
  3231. redox reacions equations
  3232. Specific Heat of CO2 and Methane Combustion
  3233. Find pH of solution
  3234. Electronic Geometry of Lead(II) Chromate
  3235. KINETICS Initial RATES METHOD!
  3236. How does the universe end? Show the final equation.
  3237. Molarity of a solution.
  3238. redox help ++++
  3239. strong base weak acid titration
  3240. Invetigatory project help
  3241. Rate of combustion??
  3242. Confused (supposedly easy chem question: volume, density)
  3243. determination of pKa Bromocresol green
  3244. Balanced Net Ionic Equation
  3245. Diffusion coefficients of ions in water
  3246. Equllibrium constant values
  3247. derive equillibrium constant
  3248. Does salts react with acids?
  3249. Possible Error in Chloric Acid's Lewis Structure
  3250. help with balancing equations
  3251. Which is the superior science?
  3252. Relation between Gibbs fee energy and Diffusion coefficient
  3253. Advanced Lemon battery!
  3254. Stability of Highest Oxidation State
  3255. Calculating the Original Concentration of Bacteria
  3256. Organic Sample with Hydrochloric Acid and Sodium Hydroxide
  3257. Determining which Nonpolar Solute most likely to be soluble in nonpolar solvent
  3258. Extraction Methods
  3259. electrical conductivity of solutions and titration curve question
  3260. Arrhenius Equation - Chemical Kinetics
  3261. assignment help
  3262. Probability and Statistics Questions!!
  3263. Rates of Reaction Problem - Verification
  3264. Quick question on iodination of acetone.
  3265. Two-Step Mechanism
  3266. Photosystems
  3267. i have a germanium question
  3268. Estimation of Work in Gas Compression - Thermodynamic
  3269. Chem: Sig Figs
  3270. Chemistry: Van´t Hoff factor for baking soda
  3271. Stereoisomerism in dimethylcyclohexane
  3272. calorimetry - respiration action
  3273. pH at Equivalence
  3274. how many sig figs do i use when making conversions
  3275. Organic: Acid or basic nitrogen
  3276. who can tell the name of such organism.
  3277. molarity of solution
  3278. What is the best A4 periodic table to print out and memorise?
  3279. enzymes in dehydration synthesis/condensation reaction and hydrolysis??
  3280. Stability of dihalocarbenes
  3281. what is the Chemical equation of this?
  3282. What is the Chemical equation of this?
  3283. home assignment
  3284. How are ions formed from atoms?
  3285. NADH Nicotinamide adenine dinucleotide
  3286. Theoretical Value
  3287. Chemistry 101 Question
  3288. Determine Which Molecule Is More Polar
  3289. Need Articles relating to research in the health sciences.
  3290. chemistry qns(random)
  3291. which has highest density/boiling point: neon 20 or 22. Please help
  3292. [Chem] Hybrid Orbitals
  3293. Biology: how the wobble effect explains the degeneracy of the genetic code
  3294. silicon
  3295. Dimensional Analysis
  3296. Organic Chem
  3297. what is the difference between dendritic cells and FOLLULAR dendritic cells?
  3298. Why FADH but not NADH in brain ?
  3299. Need help with Star Polaris (altitude and Azimuth)
  3300. Applying Oxidation Numbers to Al + KClO4
  3301. organic, nitrogen compounds
  3302. Use the motion of particles to explain why density is dependent on temperature.
  3303. Why densities of pure and salt water are different
  3304. Direction Vector for Lattices
  3305. conservation of mass
  3306. moles of H3O+ ions
  3307. Help Completing this Ionic Equation
  3308. Planar concentration
  3309. Basic Chemistry Calculations
  3310. Mass range
  3311. Molality
  3312. Molecular weight
  3313. Dilution of NaOH
  3314. Simple volume/mass calculation
  3315. Copper wire length problem
  3316. Boiling point/freezing point
  3317. When i break a pencil
  3318. Elements and similar type of reaction
  3319. Volume measurements
  3320. Enzyme Reaction Kinetics Please Help
  3321. Measuring method's accuracy
  3322. Honors molecular biology homework help... please :)
  3323. Problem with unit conversion question
  3324. Amount of starting material needed for Buffer
  3325. Physical Chemistry Problem!!
  3326. Chemistry Question - Benzene
  3327. Chemical Nomenclature
  3328. Genetic Diversity in squirrels
  3329. Simple Basic Chemistry Problem
  3330. Question about thiosulphate and iodine
  3331. I need help understanding how to read and write chemical formulas!
  3332. Organic Chemistry Help
  3333. two repulsive/attractive forces that influence chemical bonds between two atoms
  3334. Organic Chem help
  3335. mole fraction help
  3336. Physical chemistry- basics
  3337. Organic Chemistry question!!
  3338. reverse of optical isomerism in a reaction
  3339. Question regarding hybridization of Carbon
  3340. How does mobile ions in a solution(electrolyte) conduct electricity?
  3341. calculate the mass in grams of each element in the body of a 57kg person
  3342. Density problem
  3343. Astronomy - Orbit length and Oribital Period of the moon to Mass of the Larger planet
  3344. Specific Heat
  3345. 1st year Chemistry Course in University
  3346. pH Adjustments
  3347. accutane question
  3348. Satellite prediction
  3349. astrophysics- Calculate the altitude of a geosynchronous orbit
  3350. RBCs in an ionic solution
  3351. chemistry-balancing equations! helpppppp
  3352. Stoichiometry - transferable mole values?
  3353. Question on Ferrofluid
  3354. Converting to atoms
  3355. 9yr old 7th grader needs help!
  3356. Blood levels and Plasma levels...
  3357. percent of sodium oxalate... help
  3358. Plant Physiology
  3359. Biology - Action of Pepsin
  3360. How Gravity affects plants
  3361. Coordination Number
  3362. URGENT: Why do you feel hot after you work out?
  3363. chem question on dash-wedge structures
  3364. Percentage Yeild - check answer?
  3365. Weight of precipitate? -
  3366. 3 quick questions...PLEASE HELP!!
  3367. One of these is wrong
  3368. Membrane Potential question: neuron function or location?
  3369. Stoichiometry Help
  3370. Chemistry - stoichiometry, solutions
  3371. FRUSTRATING QUESTION: Condensation Reactions with Covalent Bonds
  3372. Chemistry - Redox Disproportionation Balancing?
  3373. H-bonding
  3374. OCHEM - Linear Combination of Atomic Orbitals
  3375. Diffraction equation
  3376. Chemistry Moles, Molecular Weight
  3377. finding the moles required
  3378. new Chem undergrad
  3379. why does melting point decrease for impure solid?!
  3380. Determining Limiting Reactants
  3381. NEED URGENT HELP:Number of electrons with a set of quantum numbers?
  3382. alkyl halides left in an open container...what happens?
  3383. urgent-miller index
  3384. Adiabatic Expansion
  3385. Enthalpy change of a vaporization rxn
  3386. Please Help to solve a problem
  3387. How to find the Ionization energy of He+
  3388. Questions bout the Chloride Shift in R.B.cell
  3389. Naming BaHPO3?
  3390. Equivalence Point- Concentration
  3391. Please help urgent
  3392. Question about jets
  3393. Specific Heat Help
  3394. examples of convention, radiation and conduction help
  3395. Newton's law help
  3396. true or false/correct if statement is false help
  3397. Chemical equillibria
  3398. molecular geometry structure
  3399. Vapor Pressure problem
  3400. Need help with Excel
  3401. Complete Combustion of C5H12
  3402. first law of thermodynamics rate problem
  3403. Entropically or Enthalpically favorable?
  3404. Equilibrium
  3405. Help in convention, radiation and conduction
  3406. easy percent composition question
  3407. formula to find sunrise/sunset time difference
  3408. Solubility of an acid
  3409. color investigation
  3410. help to solve Non-specific binding in CNT FET
  3411. Ionization and Affinity
  3412. PLEASE......NEED HELP ASAP...WORK DUE 2morrow
  3413. HElp a.s.a.p
  3414. Help With Half Reaction/Redox Equation
  3415. d orbitals first ionisation energy
  3416. Help with calculation
  3417. Mole calculation
  3418. Mass Percent
  3419. Help with balancing equations.
  3420. Help Determining Molecular Formula
  3421. Finding mass based on amu and % abundance
  3422. Mole Fraction problem
  3423. Questions about polyatomic ion compounds
  3424. Quick but Urgent Question Regarding NH4Cl + H2SO4
  3425. Help with nanomolar calculations
  3426. Quick Conceptual Question on Ideal Gases
  3427. solubility and chemical equations
  3428. gas laws problem (need quick help plz)
  3429. Redox Reaction With Nx Nitrogen Compound
  3430. I NEED HELP ASAP! PLZ! (Soluble Solid)
  3431. Biochem Ph Problem
  3432. How can water have a molarity if theres no diff b/w solute and solvent?
  3433. error analysis in titration
  3434. chemical reactions with ether?
  3435. IUPAC name for this compound
  3436. I don't get this pKa pH problem!
  3437. gas stoichoiometry
  3438. OM theory when metals(Ni,Cu,etc) are involved
  3439. VERY URGENT: Please help with Diffusion Question and Membrane Protein question
  3440. Biology Question: HELP PLEASE!
  3441. calculating the work done on a decomposed solid
  3442. how to find the molecular formula out of the molar mass?
  3443. second year university biochemistry - pH and Buffers
  3444. Spectral data -H NMR and C NMR
  3445. acidity of phenol
  3446. Which valence state do I use?
  3447. Is hydrogen non-metallic?
  3448. i need book or web for analysis ??????
  3449. Hemoglobin binding
  3450. Hemoglobin binding
  3451. Acid-Base Reaction with Acetic Acid and Ammonia
  3452. Effects of gravity on blood pressure
  3453. Interpretation of the Tanabe Sugano diagram
  3454. Molecular geometry
  3455. Confused:/ experimental evidence?
  3456. chemistry help polar vs nonpolar
  3457. Hydrogen bonds
  3458. Simple Biology Question
  3459. Stuck with Hess's Law
  3460. energy level diagram
  3461. Stoichiometry Problem
  3462. Nitric acid has a density of 1.42g/ml and is 16 M. Calculate the percent HNO3 by mass
  3463. Need Help With Ratio In Chem
  3464. Is Molarity simply "moles per liter"
  3465. Please help me with some gas law problems
  3466. Does a buffer system have to have H+ dissassoc, or can it be O's instead?
  3467. Photosynthesis problem
  3468. experiment about efficiency of bisulphite as wine preservative
  3469. Calorimetry Question
  3470. Chem problem
  3471. Basic question on recrystallization.
  3472. purpose of distillation?
  3473. which of the following are planar or non-planar?
  3474. Need help calculating the pressure in the bottle
  3475. Need help figuring how to maintain constant concentration in my samples!
  3476. Need Help! Lewis Dot Diagram - NO+ (nitrosyl)
  3477. Thermodynamics
  3478. What is the formula of the hydrate?
  3479. Muscle Fiber Contraction and Calcium
  3480. have a pretty basic chem problem about lights and radiation
  3481. '''URGENT''' Hydrogen Peroxide on Potatoes ISA
  3482. Redox reaction
  3483. Regarding consevation of energy on electrolysis
  3484. Partial Pressures Problem
  3485. Enyme Kinetics: Carbonic Anhydrase
  3486. What happens when two electrons in a shell collide?
  3487. Have I lost my crystals?
  3488. I keep getting errors in a simple copper sulfate experiment
  3489. Some chemistry problems... I don't know where to start...
  3490. Having trouble understand the Mass-to-Charge Ratio
  3491. Intermolecular Forces
  3492. Chemistry Problem
  3493. Shielding Effect and Chemical Shift
  3494. How do I calculate the length of a bond?
  3495. How do I calculate the length of a chemical bond?
  3496. 1st law of thermodynamics, work/heat
  3497. boiling point??
  3498. Trick Question? (Making a solution)
  3499. Oxidation or Reduction
  3500. Mass-Volume Question
  3501. Mass of Reactants and Products
  3502. Mass of Reactants and Products
  3503. Charles, Gay-Lussac and of course Boyle
  3504. Volume/Volume %, manipulating units
  3505. electrolysis of water
  3506. I need help with the equations
  3507. Mass Relationships In Chemical Reactions
  3508. Titration: Chemistry
  3509. Octet Rule
  3510. solubility question
  3511. Help with finding molecular formula at a specific P, V, T
  3512. Chemistry Question
  3513. Molarity and molality
  3514. limiting reactants
  3515. finding molar mass of unknown element
  3516. Calculating Final Temperature
  3517. Find volume of a mixed gas at STP
  3518. Organic : Acidity/basicity
  3519. Chem: Soluble with Insoluble: Will Reaction occur?
  3520. Isomerization of dimethyl maleate to dimethyl fumarate
  3521. Solubility Product Constant Question
  3522. CHEMISTRY: Partial Pressure
  3523. Enzyme Kinetics Problem
  3524. Laboratory Chemisry Question - Redox Reaction
  3525. calculate concentration
  3526. concentration of a solution
  3527. titration- pre lab. really don't understand
  3528. Enthalpy of Reaction
  3529. Estimating p50 for Hemoglobin/Myoglobin
  3530. Molar mass of each substance
  3531. Question about Compound Purity
  3532. distillation question~
  3533. 6th Grade Science Experiment Help
  3534. Temperature at zero pressure
  3535. Freezing point
  3536. Titration
  3537. My first chemistry test ever
  3538. Chemistry problem involving gas laws
  3539. Net ionic equation
  3540. Which electron configuration is not possible for As? Don't know much about spdf orbit
  3541. What is the electron configuration for Gd?
  3542. Grignard Reagent Solvent
  3543. Ionizing Cesium Atom
  3544. Checking Answers of Chemistry Assignment
  3545. How do you convert Density into moles?
  3546. adding acid to buffer
  3547. question about unknown type of metal ion
  3548. Schiochemistry...
  3549. lmax or 1max ??
  3550. Error Analysis
  3551. Stereoisomers
  3552. Simple question?
  3553. Nomenclature
  3554. Solubility Problem
  3555. Hey, I'm helping a HS student write a research abstract
  3556. velocity distribution curves general inquiry
  3557. velocity distribution curves general inquiry
  3558. Question about sugars
  3559. Convert Kp to Kc?
  3560. The bonding in aluminium oxide
  3561. Please i need a fast help
  3562. simple distillation
  3563. Biology trouble
  3564. Electron delocalization in Benzophenone
  3565. What is the order of reaction for Phenolphthalein?
  3566. 3 Genetics/Genomics Questions
  3567. Interpreting a mass spectrum.
  3568. Hyperchem 8.0
  3569. How to name K2C204
  3570. Difference Spectrum
  3571. Remove electron from gaseous atom
  3572. Biology: Evolution and Variation
  3573. Freezing point depression
  3574. Dissociation energy ?
  3575. Bond Energy and Bond Lengths
  3576. LCD molecules
  3577. Transferring electrons
  3578. Determination of % Comp of Al/Zn Alloy
  3579. How much segma bonds are there ?
  3580. Mass Vs. Weight
  3581. which has the smallest radius?
  3582. Atp
  3583. Question about activation energy and reaction rates.
  3584. titration, molecular mass
  3585. 11th gr. chem (composition of a hydrate)
  3586. Finding the composition of a mixture at equlibrium
  3587. Equilibrium
  3588. Redox Equation Addition
  3589. Calculating pH given M
  3590. depth determination of layer in seismic survey using intercept
  3591. hydrolysis
  3592. Chemistry: determing name of a compound.
  3593. Nitrogen Biogeochemical Cycle (kinda)
  3594. Net Ionic Equation, easy
  3595. Solublity
  3596. Limiting and Excess Reactants in Redox
  3597. How do ions move in an electrolytic cell?
  3598. Atoms, Moles, Grams Conversion
  3599. HELP!!!A question on vapour pressure
  3600. STP question
  3601. hereditary disease,minting protein
  3602. Elements
  3603. H NMR Spectrum - Molecular Structure
  3604. Quantum levels and electron configurations?
  3605. de Broglie Wavelength
  3606. HELP NEEDED!!!!!! regarding distillation................
  3607. Reaction with Limiter
  3608. Chemistry - vapor pressure
  3609. bond angles
  3610. phase diagram of pure silver
  3611. Specific Heat problem
  3612. Biology - Follicle Development (or lack of) During Pregnancy?
  3613. Dissociation constant from absorbance
  3614. Electron Transmission Spectroscopy
  3615. quick question about enzyme allosteric inhibition
  3616. Quantum chemistry/physics
  3617. One of the following undergoes a reaction...
  3618. Heat of Formation for Ammonium chloride
  3619. How do you do a Lewis Diagram for a charged molecule?
  3620. Differences between DNA Polymerase I, II, and III
  3621. Intermolecular forces
  3622. VLE please help
  3623. Standard Entropy Change and Spontaneity
  3624. really need help! calorimetry
  3625. calculating effective nuclear charge
  3626. organic chemistry SN1 reaction's
  3627. Calculate the Concentration of Triprotic Acid
  3628. Empirical and Molecular Forumla calculation
  3629. Is a reaction likely to occur in these situations and what is the net ionic equation
  3630. finding pH using acidity/basicity constants
  3631. Energy with inflation of Balloon problem
  3632. chemistry Lab reports
  3633. organic chem!!
  3634. Electrophilic Addition Mechanism
  3635. Is this an aromatic or not
  3636. Error Propagation
  3637. Bond Enthalpies..plz help!!
  3638. Element Density of Period 2
  3639. Chem Mole: Molecules to Atoms?
  3640. Evolutionary Biology
  3641. Max. number of electrons in an expanded octet?
  3642. Calculating the vol. of hydrogen needed to hydrogenate under certain conditions
  3643. Titration Lab
  3644. Predicting products of acid-base reactions
  3645. Ka of weak acid indicator
  3646. Functional Groups
  3647. conformations??
  3648. The ionization energy of atomic hydrogen?
  3649. I need help with making some molecular and net ionic equations
  3650. Buffer Solutions
  3651. Net ionic equation questions.
  3652. Beer's law
  3653. Gaseous pressure calculation
  3654. Molarity and Oxidation states
  3655. Buffers, pH, and strong base
  3656. Magnesium and HCl lab
  3657. recrystallization?!
  3658. pH scale
  3659. Growth Hormone..
  3660. Does Anybody Know How to Name the IUPAC of these Compounds
  3661. sodium vapor lamp question
  3662. Question on fluorescence
  3663. Determining Ksp for Silver Sulfate
  3664. organic chemistry determing nucleophile strength
  3665. A quick PPM question
  3666. Lewis dot, electronic and molecular geometry
  3667. net ionic equation
  3668. Balancing Chemical Equation
  3669. Dilution Factors, Determining Molarity
  3670. diffusion lab semipermeable membrane help
  3671. Balancing Equations.. This one is a beast!
  3672. H nmr
  3673. AS Chemistry help
  3674. Comparing acidity among 3 compounds - pic included
  3675. Reducing agent.
  3676. Q in crystal field theory
  3677. Balancing using half reaction method
  3678. Concentration of Hydronium
  3679. pH
  3680. What else turns iodine blue black?
  3681. Kb
  3682. Can someone explain?
  3683. Organic Chemistry: Aromatic Compounds
  3684. synthesis
  3685. Proving equations are equivalent
  3686. How to calculate heat of combustion?
  3687. Chemistry: 2 samples of the same liquid but different temp - final temp?
  3688. Kinetic/Potential Energy, Endothermic/Exothermic
  3689. Saltcrystal
  3690. How much Chromium metal will produced from the above reaction?
  3691. What is the frequency v0 for the metal and what is the wavelength of the emit electro
  3692. What was the energy level of the individual electron of hydrogen atom ( Η )?
  3693. How much is the energy efficiency of the process of photosynthesis?
  3694. energy barrier?
  3695. Alternative to Sodium Acetate Trihydrate
  3696. Hydroxide expirement *Need help by tmr
  3697. The reaction of rusting iron and the heat produced
  3698. Zn(OH)2 and Al(OH)3
  3699. Titration question
  3700. Looking for someone to check my chem. questions.
  3701. Determining the empirical formula of Magnesium Oxide
  3702. IUPAC naming rules
  3703. Can Experiment (Pressure)
  3704. Ka estimate
  3705. large error for my freezing point depression.
  3706. Metamers (All you need to help me on is whether the compounds are metamers or not)
  3707. constant pressure calorimetry
  3708. Simple Distillation
  3709. Redox potential (Using the Nernst Equation)
  3710. science help
  3711. solid-liquid phase diagram
  3712. Converting Celsius to Kelvin.. Easy but slightly confusing
  3713. Question about the derivative of Gibbs Energy
  3714. electron configuration
  3715. Balancing equations
  3716. Need to find Density and specific heat of NaOH
  3717. Chemistry Lab Help!
  3718. Solubility
  3719. Determintion of the volume strength of the solution of hydrogen peroxide provided....
  3720. writing formulas for compounds.
  3721. calculating theoretical yield of resulting alum from water dissolving....help asap!
  3722. Hydroboration Reaction with BD3
  3723. Thermochemistry question
  3724. Electronic & Molecular geometry: XeO3F2
  3725. Quantitive Energy problems
  3726. Separating salt and sodium carbonate help
  3727. Acid-Base Properties
  3728. antifreeze in water problem
  3729. Le Chatelier's Principle
  3730. Vsepr
  3731. Chemistry Question - Distillation - Why tilt the condenser?
  3732. redox half reaction
  3733. Chemistry Pressure Lab
  3734. phenol + fecl3
  3735. amide for esterfication
  3736. Enthalpy
  3737. Marine Bio
  3738. Simple transposition
  3739. Mass of Au produced?
  3740. s
  3741. extraction?!?!
  3742. Finding moles from volume? diatomic
  3743. Producing required energy from Combusting Methane
  3744. Help with 2 questions coast of electricty and pressure
  3745. Hydrate Lab Help? PLEASE? DUETMRW><
  3746. Stoichiometry: finding the yield in reaction of sodium azide with iron oxide
  3747. Stoichiometry: yield of reaction between hydrochloric acid and calcium carbonate
  3748. addition of equilibrium constants
  3749. Crystallography
  3750. vapor pressure saturation
  3751. Proofread my mineralogy essay? More for structure/coherency than accuracy.
  3752. nemertine-nemertea
  3753. Glucocerebrosidase
  3754. Need Help - Chemistry
  3755. Biology Cell Question
  3756. Activation energy
  3757. Chemistry kinetics
  3758. Questions on exceptions to Aufbau principle. . . Please help!!!
  3759. I need help with how to do change in enthalpy
  3760. change in enthalpy help?
  3761. Cells (Please Help Quick)
  3762. Atomic Size
  3763. CHEM: Bond Order
  3764. Unknown Organic Chemicals Distinction
  3765. First Order Decomoposition
  3766. CHEM: Triple point Temp and Pressure
  3767. carbon 14, radioactive decay of ocean waters
  3768. Constant Pressure Calorimetry *help please*
  3769. Need help understanding sceanario only, is it a closed reversible system?
  3770. Activated Complex theroy
  3771. Lewis Structures and Valence Electrons?
  3772. Calculating dipole moments
  3773. find the molarity and ph of diluted HCl
  3774. Which acid is stronger?
  3775. Organic Chemistry!!
  3776. Aromatic question
  3777. Chemistry kenitics problem
  3778. Chiral or achiral molecule?
  3779. chemistry
  3780. chem
  3781. Dna
  3782. Explaining photosynthesis
  3783. ChEM: ground state eltron configuration
  3784. Calorimerty problem!
  3785. nucleoside
  3786. chem
  3787. chemistry
  3788. SN2 reaction
  3789. Acids and bases
  3790. Main products of a reaction
  3791. Number of products
  3792. Stability of carbocation
  3793. chemistry
  3794. how to find abundance of 206, 207 and 208 Pb
  3795. Analytical chem lab and dilution factors
  3796. Do these bond when..
  3797. upwelling rates in the ocean involving carbon and nitrogen
  3798. Recrystallization Percent Recovery
  3799. 1st Year chem question
  3800. Can Anti-freeze freeze?
  3801. Liquid-liquid Extraction
  3802. Planar representation to chair conformation
  3803. Quick doubt on organic nomeclature
  3804. Simple Mole Conversions
  3805. Solubility Product Constant Lab
  3806. Isoelectric point
  3807. Determination of the enthalpy of combustion of Magnesium using Hess's law
  3808. Why doesn't brass corrode?
  3809. Question about Le Chatelier's Principle with regard to Temperature.
  3810. combustion and rate of reaction
  3811. Can unsaturated fats become saturated?
  3812. Hill's equation and plot-Biochem
  3813. Isoelectric point
  3814. some probem in my salters investigation
  3815. Trade limit specialisation ! NEED HELP!
  3816. Having a massive brain fart... SIMPLE "molarity -> molality" conversion...
  3817. Effect of inhibitor on enzyme
  3818. Dme + h2o
  3819. i need help with general unknown (qualitative analysis)
  3820. Quick lab questions.
  3821. Lysine protonation
  3822. a couple of geostationary calculations
  3823. Totipotency of a cell
  3824. chemistry, affinity
  3825. Mass Spectrometry of CCl4
  3826. Classifying Ionic Compounds
  3827. Diagram for the Structure of BrCl4+?
  3828. Defendmyaname, astronomy questions.. please help?
  3829. can i seperate co2
  3830. Electrochemistry
  3831. Entropy
  3832. More Entropy
  3833. Chalorific Value and Diesel Formula
  3834. statistics in biomedical
  3835. Chemical equilibrium help!!!!
  3836. Qualitative Solubility Predictions
  3837. Chem Eq Balancing - underdetermined system?
  3838. calculating atomic radius from weight + density
  3839. Strange result in stoichiometry limiting/excess problem.
  3840. volume of HCP unit cell from radius + c/a ratio
  3841. Why is Electrolysis Not Efficient?
  3842. Thermodynamics
  3843. Chem Weak Acid Strong Base Help
  3844. Need Help With My Unit Assignment!!!!(DUE December 5th)
  3845. question about geomagnetic poles and geographic poles, distance to each from a city
  3846. Calculating Equilibrium constant
  3847. Sexual Selection Question
  3848. [Chemistry] questions on solubilty of bases and naphthalen-2-ol
  3849. Vitamin C coursework help
  3850. Heat of reaction
  3851. Sigma & Pi bonds
  3852. writing chemical equations w/ catalysts...
  3853. Need help finishing my lab....
  3854. Extraction Lab
  3855. Atomic Absorption Spectroscopy
  3856. Purifying 'Al' using 'HF'
  3857. thermodynamic cycle
  3858. Lithium Borohydride
  3859. Incomplete octets w/ lone pair
  3860. Determine the homolytic C-H bond strength in CH3OH employing the following data.
  3861. weight percent of Ge needed to yield alloy with x atoms/cm3
  3862. E, Z isomerism
  3863. help me please (thermodynamics)
  3864. NaCl solution osmotic pressure
  3865. partial pressure question (should be easy)
  3866. partial pressure question
  3867. Thermodynamics - ΔG° and pH
  3868. Relavite acidity
  3869. weight percent of element to give specific density for alloy
  3870. Mass fraction problem!
  3871. Potenital Differnce between Salt Bridge and rxn
  3872. Urgent: In need of essay reader !
  3873. are these the correct lewis structures
  3874. Diels-Alder Reaction
  3875. philosophy
  3876. Help with Identifying the group in ionic compund formulas
  3877. Calculating deltaH°f
  3878. Bridging Step of Krebs Cycle....oxidatiion or reduction?
  3879. chemistry lewis structure
  3880. Electron transfer in Redox equation
  3881. Lead-acid battery
  3882. % Ionization vs. Concentration of Strong Acid
  3883. Concentratin of Solution
  3884. Chloroplast
  3885. Abbreviation for the Mole
  3886. DNA Comparison of Potential Energy, RMS Deviation, Electrostatic Energy
  3887. differentiation of compression factor
  3888. chemistry, how do i draw the lewis structures for these molecules?
  3889. Marked Unfairly
  3890. % element by mass in soln.
  3891. Determination of an unknown concentration
  3892. Calculating Gas Volume at STP
  3893. Bacteria Growth Rate
  3894. Reaction Heats
  3895. ionic bonds
  3896. Weak acid/strong base titration (Acetic acid/NaOH)
  3897. Citric Acid Cycle --matching carbons
  3898. Glyoxylate cycle question...
  3899. Hund's rule spin
  3900. Several Questions Re. Thermodynamics
  3901. ATP in Fatty acid oxidation and citric acid cycle
  3902. Lattice positions etc
  3903. Question Re. Ksp
  3904. Sarcosinemia, rare genetic disease(cant find a history of it for my bio ISP)
  3905. what is the lewis structure for IO3
  3906. % of titrated sample
  3907. EMF and standard electrode potential
  3908. Probability of finding a spherical cavity of a radius in proteins
  3909. guys.. is any one know about the formation of Acetylsalicylic Acid
  3910. Flame Test Lab Colors
  3911. balmer and pashen series analouges
  3912. Chemistry, mL required to Concentration of HNO3
  3913. Potassium chloride vs. Sodium chloride for osmosis?
  3914. kinetics of bromide-bromate reaction
  3915. consentration question(basic chemistry)
  3916. Difference between van der Waals forces and dispersion forces
  3917. Determining Molar Solubility
  3918. what is dative bonding?
  3919. finding bond angles
  3920. Finding pressure of argon gas
  3921. Percent Composition
  3922. Emperical Formula for hydrate
  3923. Homework HELP, cell questions
  3924. Chemistry, colligative properties-freezing point
  3925. Physical chemistry...exam
  3926. composite activity coefficients
  3927. carbon 14 ratio
  3928. Help: Determining the equilibrium conversion and final pressure of a reacting system
  3929. Gas law problems
  3930. how to balance this formula..
  3931. how to solve this compound question?
  3932. Why HCl is not a hydrogen bond
  3933. Getting a negative result estimating FST between populations
  3934. Aspirin + NaOH => ?
  3935. Astronomy 100 - Stellar Temp, Mass, Luminosity
  3936. Understanding reaction products
  3937. Boltzmann's constant/Maxwell-Boltzmann dist. of molecular speed help
  3938. Enthalpy
  3939. Heats of solution + Heat of Reaction ?
  3940. Enthalpy
  3941. Physical Chemistry
  3942. peptic(zymogen cells)
  3943. NaOH(s)-->NaOH(g)
  3944. chemistry, equation and formula
  3945. Metric Prefixes
  3946. Sn-Pb phase diagram
  3947. Nucleophiles and carbonyl compounds .
  3948. Molar Mass and density gas relationship
  3949. Biofuels!
  3950. Question about orbitals?
  3951. Percent Composition
  3952. Activation free energy for nucleation
  3953. Polar bonds
  3954. Question about gas and volume
  3955. The chemical potential
  3956. Vapor pressure question in chemical thermodynamics
  3957. Convection
  3958. Conceptual--Combustion of a sample
  3959. Ksp of Calcium Hydroxide - A Percentage Error of 480%??
  3960. Starch, commercial bleach and halides
  3961. what is this structure??
  3962. pH of a solution of a weak acid and a weak base (not conjugates, not BHA [NH4CN])
  3963. Chemistry - Calculating moles, mass and percentages
  3964. Electron Configuration of Large Atoms
  3965. Hybridization/Effective Nuc. charge questions
  3966. specific heat of combustion?? help
  3967. Magnesium oxide smoke lost during the reaction?
  3968. MCAT Preparation Question - Solutions
  3969. Chemistry-Born Haber Cycle(pls help!!)
  3970. Biology - Different Stages of Mitosis
  3971. Help for grade 11 chem questions
  3972. Gibb's free energy confusion!
  3973. Intermolecular forces
  3974. Fundamentals of Reaction Theory: reaction rate constant in the statistical ensemble
  3975. Chemistry: Degeneracy of states caused by multiplicity of spin
  3976. % by mass concentration
  3977. *urgent* Finding unknown acid concentration
  3978. How would you go about describing a precise position?
  3979. light emmiting chemical
  3980. Chemistry Homework-- Stoichiometry: Volume and Particle Calculations
  3981. Organic Chemistry Synthesis Question
  3982. Pushing capacity of a human being
  3983. Question on how to prepare a buffer solution
  3984. How to distinguish between pairs of componds?
  3985. Distinguish between polyunsaturated vegetable oil and petroleum oil
  3986. Polar bonds...
  3987. Did I work this problem correctly?
  3988. [Electrochemisry] How to find the Cathode and Anode, and oxidation and reduction
  3989. PD Experiment Help
  3990. Heat of Combustion
  3991. Chemistry - Edman degradation
  3992. Is this a feasible experiment?!?!?
  3993. NaNo_3 dissolved in NaCl saturated solution
  3994. maximum voltage
  3995. Organic Chem- Mechanism Question(Oxidation of Glycol)
  3996. Faraday's Law of Electrolysis
  3997. Ionic solids: enthalpy and entropy
  3998. Genetics Question - Testcrossing
  3999. P/O ratios
  4000. Lewis Structure of Sodium Benzoate
  4001. Diamond Lattice Question
  4002. Finding the percent weight an element in an Alloy
  4003. Materials -- unit cell question
  4004. Thermodynamics help! Ideal gas equation
  4005. Reaction of strontium nitrate + copper (II) sulfate pentachloride?
  4006. Glycine/hydrazine buffer
  4007. asa question
  4008. Henderson Hasselbalch equation! Where did I go wrong?
  4009. circulatory and respiratory system help!
  4010. Slide preparation question
  4011. Beer-Lambert equation
  4012. How to calculate the molar enthalpy
  4013. Wave lenght in micrometers
  4014. Thermochemistry question
  4015. Crystallization Report - What is a Good Yield?
  4016. 'Resistance to Temperature Changes'
  4017. Why is it possible...
  4018. How are atomic radii and H-bond strength related?
  4019. Five similarities between DNA and Protein?
  4020. Comparing Molecules of Gases
  4021. Organic Chemistry- Geometric and Structural Isomers of C6H12
  4022. Predicting a precipitate
  4023. Question about viruses ....
  4024. Thermodynamic stabilitiy of colloidal systems
  4025. Average diameters of colloids
  4026. Beginner's Mass Ratio Problem
  4027. Equations
  4028. describing bond between elements..
  4029. Electrochem help
  4030. Strong or weak acid?
  4031. how many electrons on each level type
  4032. how to describe this bond..
  4033. how to describe the the yonic value and type of bond of this formula..
  4034. sort these substances by boiling point..
  4035. how to know if a mulecule is polar or nonpolar
  4036. how to calculate the dipole moment of a molecule??
  4037. Liquid Chlorine-Inter and Intra Molecular Forces
  4038. isotope problem
  4039. Chemistry - Molar Entropy Question
  4040. Heat of Reaction question
  4041. Chemistry- two point Arrhenius Equation (miscalculation??)
  4042. Effect of degassing on particle size
  4043. sublimation and fusion.
  4044. Diffusion constant
  4045. Diffusion problem
  4046. Peptide group planarity
  4047. Bio Questions on Genes...
  4048. Calculate difference in molar entropy
  4049. Astronomy: Estimate the age of the observable universe
  4050. Boiling point on top of mount everest
  4051. Number of chromosomes in each step of mitosis in human
  4052. Stoichiometry.... Did I work this problem correctly?
  4053. Physical Chemistry photoelectric question... stumped
  4054. Chemical composition of the earth - Astronomy/Chem question
  4055. chemistry
  4056. Equation
  4057. moment dipole strength help..
  4058. Quality and percent volume
  4059. Stains and Fabrics
  4060. Chem: Equilibrium Constant Question
  4061. Chromosome damage
  4062. Bronsted - Lowry Theory Of Acids and Bases
  4063. Molecule - Polar or Non Polar?
  4064. Boiling Point
  4065. Ionic nomenclator
  4066. Cell division during pregnancy
  4067. S-layer proteins and storage
  4068. mc(delta) t (What am I doing wrong?)
  4069. cell adhesion
  4070. help!//Resting membrane potential, hyperpolrization ?
  4071. calculating mass of reactanrs
  4072. Independent and Dependent Variables
  4073. Calculating Molar Mass from a BCC
  4074. Calculating Avagodro's Number
  4075. limiting reagent
  4076. Titration of H2SO4 and NaOH
  4077. Lactate absorption errors
  4078. Partial pressure problem
  4079. Gen. Chem: Solubility
  4080. Find Limiting Reactant
  4081. PV = nRT; units
  4082. calculating heat change
  4083. Phase Diagrams - Density?
  4084. the changes
  4085. Electrical Work Help!
  4086. Gas Equilibria
  4087. Stoichiometry
  4088. Need help with stat thermo qtn
  4089. Phthalic Anhydride derived Polyesters and Nylon structures+reactions????
  4090. empirical formula of magnesium oxide
  4091. probability - conditional
  4092. Entropy
  4093. Solubility problem
  4094. Gaussian 03W Bonding
  4095. resonance structure
  4096. energy-level diagram
  4097. Calculating the composition of vapor in mass percent
  4098. Manipulation of Heat and Work Equations
  4099. formal charge
  4100. Thermodynamics: Enthalpy of Sucrose
  4101. O-Chem Alkyl Halide Reaction with a Chair Conformation
  4102. acetylsalicylic acid in ferric chloride test
  4103. Unit clarification
  4104. Rate Constants From Equilibrium Constants
  4105. Phosphates Colorimetric Determination
  4106. Organic Lab Acetanilide Crystallization
  4107. mass times avogadro's numbers = molar mass ??
  4108. Chemistry pH problem help plz NaOH and HCl
  4109. pH of buffer with addition of conjugate base
  4110. Calculating mass of vapor from vapor pressure
  4111. n= cv
  4112. Chemistry Gas problem
  4113. The Chemical Basis of Industry
  4114. Solubility Combining Ionic Equations,
  4115. Solubility Combining Ionic Equations,
  4116. Activation energy
  4117. Isomers
  4118. Concentration problem
  4119. acids and bases
  4120. specific heat capacity
  4121. Gas Law problem.... please help
  4122. What is wrong with the following DNA strand? Why is this incorrect for DNA?
  4123. Coordination Chemistry
  4124. Spindle formation
  4125. rate laws
  4126. chemistry- ideal gases
  4127. w_max & T in fuel cell
  4128. How many grams in 1 amu ?
  4129. Find the molality
  4130. pH
  4131. Another pH
  4132. Force of Attraction between two ions?
  4133. I need help!!! WHEATSTONE!!
  4134. The pH of a Mixture of Weak Acids
  4135. Biophysics and ion channels
  4136. Slope question?
  4137. synthesis of oxalate complexes, post lab question
  4138. reaction rates
  4139. electron configuration
  4140. Question about deriving Gay-Lussac's Law
  4141. Ionization Problem
  4142. Carbon Dioxide in Water
  4143. How would a biologist determine that a mutation has occurred when...?
  4144. PartB Distribution of coefficent in immiscible solvents
  4145. A couple chem questions
  4146. BIO: questions about GFP and CaM
  4147. Octet and Duet Rule
  4148. Analysis of simple salt
  4149. Redefining the meter, kilogram, etc.
  4150. What mechanism is responsible for the sequencing of amino acids?
  4151. Reaction rate mol-1sec-1 to sec-1
  4152. 1-bromobutane conversion work shown... please help!
  4153. Writing Word Equations
  4154. GAS LAW and other PRE LAB HELP
  4155. Ideal gas law and Composition
  4156. Chemistry: Significant Figures and Addition
  4157. Dipole/Induce Dipole and Induce-Dipole/Induce-Dipole
  4158. Calculating free energy from Ksp
  4159. Salt Production
  4160. Phenol dissociation
  4161. Finding shortest distance in bcc
  4162. Why would smaller seeds be more sensitive to saline water than larger seeds?
  4163. First Order Decomposition -> % of compound. Please help!!!
  4164. hydrogen bonding with NH3 plz.help.ASAP!
  4165. ATP, Phosphate
  4166. stomatal density between monocot and dicot
  4167. why aren't cell potentials multiplied by coefficients?
  4168. Quatum mechanics basic theory questions
  4169. Human Genetics
  4170. Thermochemistry Problem
  4171. Theoretical Yield, Molar Mass, and Percent Yield
  4172. Is water a solvent in this problem?
  4173. How to find density of a compund
  4174. dissolving equation(simple)
  4175. If life could arise from non life billions of yrs ago could that happen today?
  4176. Calculate heat lost or gained?
  4177. If given a device to lift a large mass, would you use a hydraulic/pneumatic fluid?
  4178. Do larger seeds need less water to germinate?
  4179. Chemistry The Atomic Mass of M
  4180. Lack of Lewis Catalyst for Bromination (Halogenation)
  4181. aqueous solution
  4182. Thermochemistry : % Mass Question
  4183. calculating the [H+] and pH of a lactic acid solution
  4184. which one will give a hydrogen..
  4185. Chemistry:the d block. equations.
  4186. Blood Alcohol Level?
  4187. Calculating Ksp from Delta H
  4188. chemical equilibrium
  4189. Stoichiometry/Limiting Reagents
  4190. Organic Chem: Benedict's test and acids - false positives?
  4191. Bonds: Polar Covalent
  4192. Equilbrium questions (chem)
  4193. Need Help! About resonance
  4194. question about a bunsen burner lab?!
  4195. Chem/Precalc Problem
  4196. Stoichiometry Help?
  4197. Kinetics
  4198. Aspartame
  4199. Take-home free response question on plants
  4200. Matches combustion formula
  4201. Left, Right or Double headed arrow?
  4202. Endothermically dissociating compounds ?
  4203. Chemistry: Finding a temperature change using a temperature/gram ratio
  4204. Minimum Pressure applied by reverse osmosis?
  4205. Chemistry. Effusion
  4206. Burining Candle/oygen
  4207. Dilution and moles
  4208. CHEM - Uranium isotope relative abundance at diff times
  4209. Chemical equilibrium
  4210. Writing net ionic equations...?
  4211. what would be the good method and solvent to purify biphenyl?
  4212. What is the differences between hydrolysis and hydration?
  4213. Brain Cells and Energy
  4214. basicity of histamine (chemistry)
  4215. Size of epithelia cells
  4216. Determining the quantity in moles of the gas that remains unreacted...?
  4217. Balancing Chemical Equations.
  4218. Atomic orbitals
  4219. composition of metal alloy
  4220. Particle in a box
  4221. question regarding homeostasis in Daphnia
  4222. question regarding homeostasis in Daphnia
  4223. Molar enthalpy of combustion of magnesium
  4224. Formula of a mixed copper salt
  4225. How much energy does it take to cool and heat up water
  4226. lab doubt
  4227. dillution of a gas
  4228. amides
  4229. Equilibrium - Calculating Kp
  4230. Chemistry AP - Acids and bases
  4231. MC: Chemistry Ideal Gas vs Real Gas
  4232. Do plants destory auxin intentionally?
  4233. Biuret's Test on Eggwhite
  4234. Acid Gas Disposal
  4235. Chemistry Questions
  4236. Gibbs Free Energy help
  4237. Thermodynamics beginner's
  4238. how do you graph this?
  4239. Grade 9 Science Experiment Help!
  4240. Quantitative Analysis Course - Titration Problem
  4241. Mass flow control and ideal gas calculation
  4242. Mass of cluster question in astronomy
  4243. Maxwell's theory of Tm fact or science fiction
  4244. Huckel's rule for Aromaticity--what is n?
  4245. Explaination needed for Stoichiometric problem.. and is Al salt colorless?
  4246. Calculate Total Heat Capacity
  4247. Why would leaves in a K+ solution have more open stoma than leaves in a Na+ solution?
  4248. Please Help! Back titration!
  4249. Partial pressures and equilibrium question
  4250. Acid strengths
  4251. What mass must be added to raise concentration? Am I doing this right?
  4252. Chemistry Enthalpy Question
  4253. HELP!!!A problem on quantitative aspects of electrolysis
  4254. molarity question
  4255. who can do the summary for me i need it now
  4256. Thermal Decomposition of Carbonates
  4257. Gen Chem - Isomers in a complex ion
  4258. pH of solution from mixing four solutions
  4259. mol fraction as a concentration?
  4260. Equilibrium problems
  4261. Pressure above which graphite will spontaneously change into diamond
  4262. Theoretical max. pressure of a given quantity of water freezing to ice
  4263. Organic Chemistry Synthesis Question
  4264. Alcohols and an oxidazing agent
  4265. Calorimetry & Enthalpy
  4266. CO questions
  4267. Polymer Question
  4268. Purpose of ether in Grignard reagent preparation
  4269. Is transcription a subprocess of translation in protein synthesis?
  4270. Finding the number of atoms in 0.500 mol of Argon
  4271. Lineweaver-Burke and some peculiar results
  4272. Unable to understand why bases in DNA which make V-A-P codon in bacter
  4273. Competitive inhibitors (biochemistry)
  4274. Chemical Equilibrium, solubility
  4275. easy percentage prob (for pro) hahah
  4276. Reaction of an aromatic arene test
  4277. Hexane's solubility in crude oil
  4278. 1D Particle in a box - locations at set probability
  4279. chemistry- electronegativity and bonding
  4280. Sodium Phosphate and Ammonium Molybdate reaction
  4281. Iron(III) Chloride and Potassium Thiocyanate reaction
  4282. Having trouble plotting this set of data - please help.
  4283. Chemistry - Entropy Changes in Physical Processes
  4284. Redox Titration, Iodine
  4285. Enthalpy of Ionization
  4286. A question on determine the rate of formation (chemistry)
  4287. Illustrate Hydrogen Bonding: Amino Acids
  4288. Reducing Agents and their relative strengths
  4289. Quantitative chemistry
  4290. Equilibrium Problem; Senior High School Level
  4291. Dilution Calculation
  4292. Equilibrium Lab
  4293. Gravimetric Analysis, Volatilization
  4294. Metals extracted from Carbonate ores
  4295. Truncating numbers
  4296. Reactions that produce harmless gas
  4297. pH
  4298. Whats the difference between spontaneous fission and radioactive decay?
  4299. AMU & Mole
  4300. Understanding Equilibrium Constants With No Denominator
  4301. Fractional Saturation of Hemoglobin
  4302. hydroboration of alkenes
  4303. Difference between alpha-keto acid and keto acid
  4304. chemical clock and entropy
  4305. Molarity of Unknown and sodium hydroxide.
  4306. the resulting pH due to the mixing of four solutions
  4307. Rate of disappearance "Answer check"
  4308. Rate constant "answer check"
  4309. Supernova Questions
  4310. Why does water volume increase when heated?
  4311. [Chemistry] Determine the concentration of h2o2 by redox titration!
  4312. Universal Gas constant
  4313. Universal Gas constant R
  4314. Water Quality Index equation and math help!!!
  4315. Difference in smooth and skeletal muscle cell organization?
  4316. Spectrum and energies
  4317. Question about Cells and Cell Channels
  4318. Empirical Formula of a Compound with only percentages given
  4319. Number of atoms reacting with a gas
  4320. [Chem] Net ionic equations
  4321. gold mining
  4322. Organic Naming
  4323. Atomic energy levels
  4324. pH problem
  4325. Chemistry Temperature Problem
  4326. Moles of ions
  4327. Understanding Acids What is the relationship between Ka and Kw?
  4328. calculation of glomerular filtration pressure??
  4329. Strong acid mneumonic
  4330. oxidation numbers for each element
  4331. acids and bases
  4332. Azeotropic distillation Please help...final coming up!
  4333. Bond Energies
  4334. autoionization of water
  4335. de Broglie wavelength of an electron
  4336. Help with Chem ?
  4337. Urgent need Help on Chem...... (average velocity, Thermochemistry, ionization energy)
  4338. Chemical reaction equation
  4339. Help with Chem- Azeotropic Distillation
  4340. Measure the relation between the current of a circuit and the heating effect produced
  4341. Chemistry freezing point and determination of molecular formula
  4342. reaction question..
  4343. atomic mass question..
  4344. Heat of Combustion
  4345. Help with high school chemistry~
  4346. Finding First Order Rxn Rate Constant
  4347. empiric formula question..
  4348. Check Concentration Calculation (Very Wordy As For Coursework)
  4349. NaHCO3 as an acid as a base
  4350. PH of nitric oxide solution
  4351. Solubility of Aniline and Acetanilide in aqueous HCl?
  4352. Mechanism for reaction of C6H5NH3 with NaOH?
  4353. What exactly is heat of combustion? How would I calculate it?
  4354. chem-highest melting point
  4355. Gravimetric analysis
  4356. need help, i think
  4357. real quick question
  4358. AP Biology Plant Questions
  4359. astronomy - rotation period of planet and wind speeds
  4360. thermochem quest (wondering if given enough info)
  4361. worked gas prob with my anwer +correct answer
  4362. concentration problem-with answer
  4363. Question regarding particles and wavelength
  4364. basic organic chem q's
  4365. heat capacity question
  4366. Physical Chemistry question
  4367. Finding ΔG and K for a given redox reaction
  4368. equilibrium pressure of a gaseous system
  4369. How do i determine the inter and intra molecular forces of these molecules?
  4370. How do you balance this chemical equation?
  4371. intramolecular interconversion
  4372. Alcohol Property Trends
  4373. CHEM Equilibrium constant help ASAP!
  4374. Acids and Bases-(salt solutions)
  4375. How do I prepare this solution? Dilution? CV=CV?
  4376. Ionisation Energy
  4377. "Plating" Metal - Cathode or Anode?
  4378. stoichiometry--hellp please!!
  4379. Anyone distinguish "average velocity" and "instantaneous velocity" please ?
  4380. Conversions: How do I get the moles of HCl from the volume of 1.0 M HCl?
  4381. stoichiometry. Please help . Thanks!!
  4382. What would happen if an electrolyte conducts both ions and electrons?
  4383. help with a quantum chemistry problem
  4384. Please Check my working
  4385. What can this crystal be???
  4386. Nuclear chemistry reaction question
  4387. Vapor Pressure Help
  4388. Energy transformation Chain
  4389. Electron transition question
  4390. Organic Nomenclature - Benzenes
  4391. Question about Compound Notation
  4392. Pressure equilibrium/Gibbs free energy question
  4393. Electrotaxis? Paramecium-electricity-migration.
  4394. Very Difficult Chemistry Problem...
  4395. Nernst Equation
  4396. The standard free Gibbs energy equation
  4397. Buffer/Ph/titration problem
  4398. Molecular structure and analysis method
  4399. Equilibrium Pressure
  4400. ksp and pH
  4401. Please someone help me answers this questions im desperate
  4402. Important Question about RNA processing
  4403. Help w/ Gravimetric Anaylsis of Mercury Oxide
  4404. Comparison of C-H bond energy
  4405. Please someone help me
  4406. Please help me on my hw problem. i need to submit it by 11pm 04/19/09 (tomorrow)
  4407. buffer solution
  4408. Finding Pressure when given change in temperature
  4409. Find the equilibrium concentration...
  4410. Physical Chemistry Help!!!!
  4411. Pressure and concentration equilibria
  4412. Biology: Plasmid
  4413. Chemsitry - Moles Consumed
  4414. Chemistry: Lead Tartrate.
  4415. Chemistry 12 - weak acid/electrical conductivity (2 questions)
  4416. Finding new Pressure in cylinder when compressed
  4417. Predict the products of electrolysis
  4418. Solid/liquid Fats at ambient temperatures
  4419. chemisrty isomer question
  4420. Enthalpy
  4421. Titration help
  4422. Colloidal chemistry - interpretation of lecture notes
  4423. Ternary phase diagram
  4424. Oil-water curvature
  4425. Adsorption isotherm
  4426. question about getting the pH...
  4427. Organic Chemistry Mechanism Question
  4428. thermochemistry(Q)
  4429. Nomenclature question
  4430. Are my Redox Calculations correct?
  4431. Nuclear Chemistry: Kinetics of Radioactive Decay and Radioactive Dating
  4432. General Chemistry - Intermolecular Forces
  4433. thermochemistry 2
  4434. General Chemistry (Hardness)
  4435. Oxidation Numbers
  4436. Voltaic Cells
  4437. Solubility Problem - Involves Addition of Another Ion
  4438. Urgent: Hybridisation
  4439. Chemistry = Freezing Point & Molality
  4440. Organic Chemistry: Reactivity levels
  4441. From a Chemistry Textbook
  4442. chemistry- boiling point
  4443. chemistry- ΔH
  4444. Entropy and Free Energy
  4445. Coulometric vitamin C Titration, pretty basic
  4446. corrosion experiment
  4447. temperature combination, Homework (HELP)
  4448. Pressure ratio problem
  4449. Resonance for deprotonated oxazolinium ion
  4450. thermodynamics problem?
  4451. Static Headspace analysis
  4452. Colligative properties: vapor pressure with an electrolyte
  4453. Sedimentation time
  4454. Surfactant
  4455. spin
  4456. Solution check for pH of Strong Acid and Strong Base
  4457. Dilutions question
  4458. Gen Chem, Factors Affecting Solubility
  4459. Genetics - primer design
  4460. where does 1u = 1.661x10^-24g come from?
  4461. Radioactivity problem
  4462. Help with undstanding Metabolism?
  4463. Oiling out of solution
  4464. Are these two phrases the same . I am not sure what it is asking for.
  4465. Interference Wedge Problem - Analytical Chemistry&Instrumental Analysis
  4466. carbonate ion 2- charge, how?
  4467. Heavy metal contamination of fish
  4468. Chemical thermodynamics, heat of formation and heat of atomization
  4469. Question about chromate-dichromate equilibrium?
  4470. Lipid bilayer and energetic favourabilityness...
  4471. Unit conversion
  4472. Need help understanding KOH + Al2O3 reaction
  4473. I need to do sme chemistry experiments online (online virtual labrotary, or the like)
  4474. Question on normal boiling point and enthalpy of vaporization
  4475. Titration
  4476. Chem. Ksp and precipitation
  4477. AP Chemistry Test / Solubility Rules
  4478. Thermodynamics
  4479. Solution check for Complex Molecule IUPAC Naming
  4480. Entropy
  4481. Finding pH given molarity and volume
  4482. AP Chemistry Test FRQ: Balancing Equations
  4483. pH/Titration Question
  4484. Packing efficiency of particles in solids-space lattices
  4485. Anod Katod BLAH!!
  4486. ph question
  4487. HI cloud and 21cm line
  4488. Fraction of solute in two layers
  4489. How fast
  4490. Empircal composition question
  4491. Organic Synthesis: Reduction of ketone to alcohol
  4492. corrosion experiment
  4493. Intermolecular bonding in liquids
  4494. Calculating base ionization constant from a known pH and concentration
  4495. Caloric content of wine
  4496. Percent composition
  4497. Which catalyst is the best for the reaction betweeen Aluminum metal and HCl?
  4498. Standard Reduction Potential
  4499. A Strömgren sphere and neutral time
  4500. Dissociation Constant of Weak Acids
  4501. Wondering
  4502. Molecular clouds and Astro Chemistry
  4503. a chemistry question
  4504. Finding the apparent magnitude of the sun, and finding Distances from it.
  4505. Solution Concentration
  4506. Molar Mass calculation
  4507. Can someone please help me with this radiochemistry question please
  4508. Le Chatelier
  4509. The Galvanic Cell
  4510. simple redox question
  4511. PH question
  4512. Need help designing a lab to calculate delta H?
  4513. A Redox question
  4514. PH question
  4515. How do water softeners work?
  4516. chemistry question
  4517. Redox Help
  4518. Oxidation of phenylethanal
  4519. Esterification - SN1 or SN2
  4520. Daniell Cells - Effect of conditions
  4521. Use of quarks in chemistry
  4522. Why is grasshopper more adapted to dry land than crayfish?
  4523. need help with 2 multi chem problems: one is combustion, the other is redox equation
  4524. Need help help on reaction mechanism
  4525. Question on water vapour and pressures
  4526. chemistry question on electron affinity
  4527. Find the amount of energy per gram in various types of nuts
  4528. What are the links between organic chemistry and biochemistry
  4529. Polyprotic base
  4530. chemical equilibrium system and where my ions went
  4531. Temp Gradient derivation at Surface, earth as infinite half-space
  4532. Titration of ASA
  4533. Predicting Products
  4534. Pure liquids
  4535. Optical density Q
  4536. How many peaks in NMR spectrum of Malic Acid, without D2O?
  4537. need help chemistry homework
  4538. carbon content in steel and corrosion
  4539. Exam question
  4540. Titration Calculations
  4541. How many peaks will there be in an NMR spectrum for Malic Acid?
  4542. Internal Organs Biology Questions
  4543. Chemistry (Stoichiometry help!)
  4544. electro chem help please
  4545. electro chem, basic concept problem
  4546. Thermodynamics govern reactions occur
  4547. basic help with PH
  4548. Hydrates
  4549. Methane-air combustion
  4550. Fractional Distillation
  4551. Organic Chemistry
  4552. Quantum chemistry
  4553. Finding the rate equation and rate constant
  4554. i need help with chemistry HW
  4555. Factors Affecting the Rate of a Reaction
  4556. Thermochemistry and Equilibrium of Reaction
  4557. how to go from density to molality
  4558. The electrical work needed to produce a mole of lead in a chemical reaction
  4559. Statistics helpplease
  4560. rates, whats wrong with my working?
  4561. simple electrochem prob
  4562. Enthalpy changes
  4563. vapour pressure problem (simple)
  4564. Enthalpy Change of Reaction
  4565. PH calculation
  4566. Organic Halide Reaction
  4567. Boiling Points
  4568. bacteria growing at interface
  4569. Preciptation(Molecular Equation and net ionic equation)
  4570. Acid-Base Equilibria - Ka constant
  4571. Concentrations in a galvanic cell
  4572. Cells in series
  4573. Chemistry exam question
  4574. Calculate the [H3O+] concentration (in M) in a 0.1 M aqueous solution of NH3...
  4575. Inorganic question
  4576. Chemistry:difficulty in understanding these statements:-
  4577. Chemistry Soluble Question
  4578. EDTA Lab Question/Clarification
  4579. Basic solution?
  4580. Half Reaction Method
  4581. easy thermo chem
  4582. easy kinectics
  4583. kinectics
  4584. ph question
  4585. bacteria growth question
  4586. what's wrong with my calculations?
  4587. Acid-base reaction
  4588. Solubility product
  4589. Phase diagram of Ag - Cu question
  4590. Molar Enthalpy question with Combustion
  4591. What does (en) mean in a chemical formula/ligands
  4592. Naming a coordination compound
  4593. Solubility and boiling point
  4594. Theoretical yield
  4595. Finding the PH and POH
  4596. Calculating solubility
  4597. rat of reaction problems i have no idea how to do
  4598. Chemistry Math (Please help!)
  4599. Reaction with water
  4600. Charge density Excess(find value)
  4601. sp3 hybridized carbon
  4602. Can you consider a benzene ring to also be an alkene?
  4603. Quick question: Hydrocarbon nomenclature
  4604. Hybridization
  4605. Biology questions
  4606. questions on Mucor and soil nutrients
  4607. The reducing agent in this redox equation?
  4608. PFR and CSTR Design
  4609. Mass-Mole conversion
  4610. Acid-Base Stoichiometry
  4611. Heat in Combustion
  4612. Cell Cycle & Cancer - Cyclin/Cdks
  4613. Oxidation reaction from alcohol to aldehyde
  4614. Chemical equations
  4615. reaction of oxides
  4616. synthetic schemes to convert butane to 2,3-dimethylpent-2-ene
  4617. Heat of solution for sulfuric acid in water
  4618. Cause of melting point depression
  4619. Regarding mutation
  4620. Percent Yeild question.
  4621. organic compound molar mass
  4622. Chi-Square and Expected number
  4623. Acid dilution
  4624. Quick moles problem
  4625. Question on margins of error with calculations.
  4626. Stiochiometry (with solutions)
  4627. identification of ions in mixture
  4628. Stoichiometry again (using solutions)
  4629. Number of moles of molecules.
  4630. solubility of p-block and d-block metals
  4631. Distribution coefficient problem for Organic Chem!
  4632. Electronic Structure (magnetic quantum number)
  4633. just the name for the chemical
  4634. Need help Microbiology!!!
  4635. Isotopes
  4636. Electrochemics
  4637. automobile chem help
  4638. Equilibrium problem - right method, wrong answer
  4639. Percentage composition
  4640. Question on inorganic chemistry
  4641. Calorimitry Question
  4642. how the diode will act in these situations in transition period
  4643. Calculating Bond Length
  4644. Chem II Lab- Titration of Vinegar with NaOH
  4645. Chemical Reactions
  4646. First Order Reaction calculation
  4647. Calculating Initial Concentrations
  4648. H NMR coupling constants
  4649. Question on relative humidity 2
  4650. equilibrium constant varying with temperature...but confused!
  4651. pH of Aqueous Solution
  4652. Gen Chem II Voltaic Cells question, not homework
  4653. Hydrolysis of Salts
  4654. help writing net ionic equation
  4655. Find the atomic radius of Ba
  4656. coord. compound
  4657. explanation of a chemical reaction
  4658. Chemistry: Net ionic equation of Fe,Cu,Zn with HCL
  4659. dry CO2
  4660. Normal distribution
  4661. K instab
  4662. Outer Space 10^3 to 10^9
  4663. Spectrophotometry of an indicator
  4664. Van der Waals'
  4665. Stoichiometry
  4666. Concentration calculation
  4667. Products or Reactants ?
  4668. Conversion of one ionic compound to another.
  4669. Solve pKa of unknown monoprotic Acid
  4670. Titration calculation
  4671. Quick (and maybe dumb) question on chirality!
  4672. hydrides of group 5 and 6
  4673. Protein pH titration (Henderson-Hasselbalch)
  4674. Is benzoic acid soluble in water ?
  4675. Free radical halogenation question
  4676. Organic Chemistry: Alkenes
  4677. Effect on Enthalpy Changes By Using HNO3 Instead of HCl
  4678. Calculating Vapor Pressure problem
  4679. Need help on calculation in titration
  4680. Clades and Shared Derived Characters
  4681. General Chemistry
  4682. weight percent and concentration problem
  4683. How many significant digits in 0 and 0.0?
  4684. Chemistry involving conversions
  4685. isotope percentages
  4686. beer lambert ques
  4687. Organic Chemistry stable conformation question
  4688. Calculate the density of Na metal.
  4689. Photoelectric efficiency and subatomic (ie electron or hole) momentum
  4690. redox titration
  4691. What is plasma?
  4692. Balancing (in acidic medium)
  4693. Thermodynamics Problem
  4694. [H+] vs. [OH-]
  4695. Oxidation #s
  4696. Which chemical makes a basic sol'n? (MC)
  4697. electron configuration.
  4698. Lewis Structure.
  4699. error!
  4700. Percentage calculation of chromium compound
  4701. Seperating Mixtures, changes in Weight
  4702. Solvent Extraction
  4703. Which is the strongest base?
  4704. Chemistry: Mixture and Mass
  4705. chem 1A HW help!
  4706. organic cis- tran- structure
  4707. Chemistry
  4708. Conversions
  4709. Electrons in GRAMS :(
  4710. Finding normal boiling point given pressure and enthalpy.
  4711. Chemistry mol and grams
  4712. Find the molecular and empiral formula
  4713. Electrode in electrolysis
  4714. Chemistry kinetics question
  4715. decompose to water and oxygen
  4716. oxidation numbers of Mn
  4717. more oxidation numbers help
  4718. oxidation reduction reactions
  4719. K_sp ; increasing pH with given [OH]
  4720. Phases and phase equilibria
  4721. Enthalpy change???
  4722. Molarity given percent solution and density.
  4723. Concentrations of conjugate bases at specific pH levels
  4724. How to Determine if Supplied 70% Ethanol was the correct Proportion of Alcohol
  4725. % (by mass) composition
  4726. calculate the gram of iron
  4727. Binding Energy for Hydrogen
  4728. percent abundance of isotopes
  4729. What will be the change in temperature of the water?
  4730. Genetic probability
  4731. Proton NMR & Integration Values
  4732. Which is strongest base?
  4733. Pick the "TRUE" Statements???
  4734. Intro physical chemistry
  4735. Combustion Partial Pressure
  4736. Chemistry Definitions
  4737. Chemistry Crossword Definitions
  4738. Electrochemistry - Galvanic Cell
  4739. Residence Time of H2S in atmosphere
  4740. Chemistry problem
  4741. A simple dilution problem.
  4742. Name of Alkane [Pic Included]
  4743. dichloromethane and water
  4744. PCHEM Question
  4745. Chemistry question
  4746. caffeine sublimation and melting point
  4747. Question about Partial Pressure
  4748. quick NH3 question
  4749. acid/base buffer reactions
  4750. gas law problem (pchem)
  4751. Percent by weight of substance in hydrate
  4752. Dilution Question
  4753. Virial expansion of van der Waals equation
  4754. Chemistry question
  4755. Easy chem question
  4756. Line spectrum problem
  4757. ozone,oxygen,entropy
  4758. heat fusion, vaporization and entropy
  4759. Reactivity Series
  4760. Fluoride Ions needed to treat water
  4761. What am i doing wrong with this chemical formula?
  4762. Identifying unknown organic compounds
  4763. Rusting Metal
  4764. specific heat problem...
  4765. Using indicators to determine acids, bases, and salts
  4766. Chemistry Net Ionic Equation help
  4767. Biology -- Calculating Resolving Power of Microscope??
  4768. Chemistry stoichiometry?
  4769. Who was glycolysis named after
  4770. Biology glycolysis question!
  4771. how long should you cut a piece of wire to obtain 0.0141 moles of copper?
  4772. how many grams of Fe needed?
  4773. homework help....
  4774. partially solube compunds
  4775. spontaneous reactions
  4776. Thermochemistry probelm
  4777. CHEMISTRY - Reaction Problem
  4778. isothermal reversible expansion
  4779. OChem Nomenclature
  4780. LeChatelier's principle
  4781. Redox/Balancing Equation Question
  4782. Balancing equation - What is the chemical formula of cement?
  4783. Percentage Weight Question
  4784. ***Biomedical Eng. HW Prob! Help!***
  4785. Ideal Gases
  4786. Calculate the frequency, in hertz (level n = 10 to level n = 5)
  4787. Density Of Metal In Alloy
  4788. OChemistry Nomenclature
  4789. Kinetic Theory of Gases
  4790. Molar mass to molecular formula
  4791. Chemistry question
  4792. Problem in ideal gases
  4793. Which Does A Better Job of Rinsing Out A Glass
  4794. Biochemistry pka and pH relationship
  4795. Balancing redox reactions
  4796. Thermodynamics
  4797. Organic Chemistry Reactions - Check my Answers, Please! :)
  4798. Adding Concentrations
  4799. Stoich
  4800. Help with Stoich limiting reactant Lab urgent!!
  4801. It takes 16.6 min for a 10.0 mL sample of an unknown gas to effuse through a pinhole.
  4802. Barium chromate
  4803. Chemistry/The equilibrium number/ I really need help
  4804. Chemical equation; reaction; balancing problem.
  4805. Ideal Gases Problem
  4806. predict value of change of Hf
  4807. Biology Proteins in Plasma Membrane
  4808. stuck on this question for a long time
  4809. Reactants
  4810. balanced equation
  4811. Calorimetry problem (been stuck for an hour or so)
  4812. Microeconomics questions (elasticity)
  4813. Maximum Percent Recovery?
  4814. Organic nomenclature help
  4815. How is the energy of an excited electron in one molecule sent to another molecule?
  4816. Doubt in chemical equilibrium question.
  4817. need help balancing this
  4818. Negative or positive charge?
  4819. Molality Question
  4820. Organic Chemistry Geometric Isomers Lab
  4821. Intro to Neuroscience
  4822. Balacing equation
  4823. Connection between spherical packing and lattices?
  4824. Variable Mole reaction.
  4825. Confusing quantum numbers
  4826. Calculating the mass of carbon needed to reduce 15.9g of Copper(II) Oxide to Copper
  4827. Quick physical chemistry question
  4828. enthalpy
  4829. diameter of a planet, known the angular size and distance
  4830. How do I calculate how well a liquid conducts electricity?
  4831. Waste Water treatment plant problem
  4832. Organic pKa
  4833. Total Mols of Ions
  4834. Beers Law?
  4835. Net Ionic Equation(s) - General Chem
  4836. Combustion analysis problem? - General Chemistry
  4837. Carbon in Kg and CO2 in ppm
  4838. Getting Empirical Forumula Using Ideal Gas Laws
  4839. find the distance from the sun to the planet known the orbital period problem
  4840. Net Ionic Equation - Need Help
  4841. Simple Equation Writing
  4842. Help on thermochemistry, please
  4843. How would I calculate the work ?
  4844. Computer Architecture HELP
  4845. Balancing tricky chemical equation
  4846. Stoichiometry - Reactants & Product Masses...
  4847. Is there any formula for this kind of chemistry problem?
  4848. Balancing Chemical Equation
  4849. Electrolytes for experiment
  4850. Molarity
  4851. ΔHrxn Liquid -> Solid
  4852. Basic Molarity
  4853. Biochemistry help
  4854. solution concentrations
  4855. find probability amplitude given normalization condition on P(x)
  4856. chemical equation for glucose osazone and limiting reactants
  4857. Lewis structure (Related! - Please Help!)
  4858. ionic rxn equation
  4859. Mole Fraction Question
  4860. Microeconomics questions (consumer preferences)
  4861. Biology - Diffusion/Osmosis of 2 Solutions
  4862. In which of the following cases is the mean not typical? (statistics))
  4863. General Biology - Faciliated Diffusion
  4864. Chemistry-potassium permanganate lab
  4865. what does Experimental Design
  4866. Gas problem
  4867. Physical Chemistry Barometric Derivation!!!
  4868. Antibiotics and Bacteria
  4869. Respiratory system help needed
  4870. (CHEM) Which of the following compounds can exist as cis and trans isomers ?
  4871. True statements about the above molecule ?(AM I CORRECT?) ~ Chemistry
  4872. Identifying Substance Z
  4873. Organic Chemistry : Naming compounds
  4874. Atomic volume to Nuclear volume. Problem Solving. PLS HELP!
  4875. How to Calculate the atomic mass of this isotope?
  4876. Activation Energy
  4877. Astronomy Help! :(
  4878. General Biology - Simple/Facilitated Diffusion & Active Transport
  4879. Standard addition involving HPLC
  4880. (Bio) Why are carbohydrates almost never on the INSIDE of the cell membrane?
  4881. Number of samples
  4882. Find Number of Neutrons in a Copper Bar given volume of bar?
  4883. 'balanceable equations' (beginning chem)
  4884. Biology: relatedness
  4885. Beer lambert law
  4886. Chemical reactions
  4887. Rate law
  4888. Mass of Anhydrous Compound
  4889. Tricky Chem math problem
  4890. Rate of reaction helppp !!!
  4891. [H+] and pH of 100 mM solution of KOH
  4892. partial pressures
  4893. Reversible Heating and Cooling
  4894. Chemistry stoichiometry problems
  4895. Running DNA and RNA through agarose gel electrophoresis
  4896. Empirical formula from masses
  4897. DNA Synthesis
  4898. Chemistry Lab question
  4899. Figuring out the amount of CO2 that goes into the atmosphere when cooking a roast...
  4900. Net ionic and Ionic
  4901. Reaction Rates Explanation?
  4902. Empirical formula prob.
  4903. Liquid Level Problem!
  4904. Help me identify peaks in H NMR please!
  4905. Balancing chemical equations
  4906. Ca(H2PO4)2 + NaOH(limited) → CaHPO4 + ?
  4907. !!Organic chemistry reaction
  4908. Finding binding energy from equilibrium bond length
  4909. Empirical formula of an oxide
  4910. freezing point of mercury
  4911. How many other atoms is the central atom bonded to ?
  4912. Rainwater pH with SO2
  4913. Simple enthalpy problem
  4914. Which is the most reactive compound? HELP!
  4915. Oxidation?
  4916. Reversible Process
  4917. Chemistry - Trying to name aromatic compounds and organic chemistry molecules
  4918. Specific Heat Question
  4919. Chemistry - isotpic mass, atomic mass, mass number
  4920. Boiling Points and Intermolecular Forces
  4921. Alum Crystal Growing question
  4922. Transfer Hydrogenation of Olive oil by Cyclohexene
  4923. Help need to balance it
  4924. Higher Rf Value? (TLC Chromatograpghy)
  4925. Weight percent of hypochlorite in bleach
  4926. Some questions for exam prep.
  4927. AP Environmental Science
  4928. Size change in a paramagnetic molecule (oxygen) in a megnetic field?
  4929. Help in deducing a equation for Neutral red
  4930. Saha Equation. Help!
  4931. Speed of a Molecule Question
  4932. partial pressures and mole fractions
  4933. Max # of electrons in an atom whose highest-energy electrons have n=5
  4934. Electrolytic reduction of iron ore - Stoichiometry
  4935. Drawing Cobalt Chloride Hexahydrate
  4936. Alpha & beta: Glucose
  4937. Given energy, calculate electrons emitted
  4938. How does the spectral lines of Hydrogen occur?
  4939. Why is the 11th electron of the sodium atom located in the 3rd energy level..
  4940. thermodynamics of mixing
  4941. biology: chromatids
  4942. Flow injection question, how to calculate Dmax
  4943. bio: cell division
  4944. Reaction Kinetics Question
  4945. How do you determine the valence energy level when looking at a periodic table?
  4946. Differential equation - radioactive decay
  4947. stoichometry
  4948. Limiting Reactant Problem
  4949. (bio) DNA Question
  4950. Chemistry word equations
  4951. Fischer Esterification
  4952. Law of combining volumes
  4953. Ant Path
  4954. Help me understand the concept of hydrolysis
  4955. Trichloroacetic acid: electron density and stability
  4956. Chemistry - 3 quick questions
  4957. Optical Spectra
  4958. calculating cell potentials
  4959. Convert ml to grams for a Heat Capacity and Specific Heat problem, is that possible?
  4960. Molecules with Microwave/Rotational spectrum
  4961. Moles of excess
  4962. Identifying an Unknown Organic Liquid
  4963. Solutions and Molecular Polarity
  4964. Electrochemistry - Redox
  4965. Digestion
  4966. Products of a chemical reaction
  4967. Electrochemistry of galvanic couple in an acidic solution
  4968. Microscope calculation
  4969. Identify specatator?
  4970. chemistry
  4971. differential equations
  4972. PCR rate of amplification
  4973. What is the formula of kerosene?
  4974. Solutions and Molecular Polarity
  4975. Ideal gas question
  4976. Calculating First Ionization Energy
  4977. Acid-Base Titrations - Soda Lime and Hydrochloric Acid
  4978. 3 Gases On a Graph, Which is True ??
  4979. Manometer Diagram with Barometric Pressure?
  4980. Redox stoichiometry
  4981. Seemingly simple decay problem
  4982. Question related to conductivity in a beaker
  4983. Thermodynamics Signs question
  4984. The properties of differnt substances is due to...
  4985. Thermodynamics
  4986. mixtures of acids and bases
  4987. Energy question
  4988. Liquid CO2
  4989. Largest possible number of villagers
  4990. How to read a curve level accurately
  4991. Energy levels in transition metals
  4992. The law of conservation of Matter [HELP]!!
  4993. A Point Of Clarification With Acid/Base Ks
  4994. Temperature resulting from the formation of water
  4995. Theromodynamics: energy from biological oxydation of alanine
  4996. Stupidity With Acid/Base Work
  4997. Calculate equilibrium constant
  4998. Molar Mass From Freezing Point Depression
  4999. Synthesis of Cholesterol Nonanoate
  5000. Net Ionic Equation Help Please