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