PDA

View Full Version : Other Sciences

Pages : 1 [2]
  1. Determining the composition of a coordination compound using molar conductivity
  2. Identify the oxidizing agent and reducing agent
  3. Grams of H2 react with 28.0 grams of N2
  4. ANAL 618: Standardizing a Sodium Solution
  5. Anal 619
  6. An Unknown Compound
  7. Biology - identification key
  8. Cellullar Respiration
  9. help
  10. [Chemistry Q] Ionic Strength of a solution
  11. Limiting Reactant Problem
  12. True Statements on Vapor Pressure
  13. Vapor Pressure of Water
  14. Chemistry Lab Titration
  15. Molecular Orbital
  16. Stokes law - Settling velocity and rate
  17. Binding Energy Problem
  18. Wanted: Solubility curve of Ca(OH)2
  19. Chemical reactivity simple question
  20. Titration of Trimethylamine with HCl (g)
  21. Predict whether aqueous soln of the following salts will be acidic, basic or neutral
  22. Orbitals and hybridization
  23. Name of SClO3- complex ion
  24. equilibrium constant
  25. Chemistry: Prediction of producs
  26. Constant Pressure Calorimetry with Piston
  27. Net ionic equation and Redox equation...confused
  28. ratio of molar mass 2 component ideal solution
  29. electron-configuration notation
  30. Determining ΔE and λ of an Electron Transition
  31. Chem I: Determining Acidic, Basic or Neutral Salt
  32. question about formal lab report-appendix section?
  33. Finding articles related to my subject
  34. Reaction Lab (NEED HELP!!)
  35. Accuracy of generation time estimate
  36. Ionic vs. Covalent
  37. buffer solutions
  38. Pressure problem from chem
  39. Resonant Structures
  40. Finding Mass of Solute
  41. thermochemical equations
  42. Finding Concentration Using Index of Refraction
  43. Bond lengths - formate ion and carbonate
  44. Order of this reaction?
  45. Aluminium reaction with acid
  46. Silver Nitrate reacting with K2C2O4 Balanced reaction HELP!
  47. how can i keep an ce cube from melting?
  48. CHEMISTRY: I need help filling out this flow chart for Group 1 Cations
  49. Gas mixture problem
  50. titrations
  51. Nuclear decay and half-life
  52. conversions in chemistry
  53. Electrolysis question
  54. Chem Lab: Separation and Identification of a Metal chloride from an organic substance
  55. Determining the Mass percent comp. of an Aqueous Hydrogen peroxide
  56. HH Equation to calculate [HCO3-]
  57. Gas Stoichiometry
  58. Help!! Moles in Phosphorus?
  59. KD calculations (Organic chem lab)
  60. Resonance
  61. Calculate wavelength in pm associated with electron traveling 60% of the speed of lig
  62. Chromatography as a separation techinique
  63. Electrochem - about the usage of standard pontential
  64. removing caffeine
  65. Chemistry recrystallization lab
  66. Standard enthalphy change and hybridisation
  67. What is the mechanism of this reaction?
  68. Enthalpy/Entropy question. Br2 liquid to 2Br gas
  69. Chemistry Calculate the oxidation no.
  70. miller index
  71. length of lattice cube
  72. Variation of masses in lead-acid battery due to H2SO4 mass variation
  73. Density Relationships - Cant find any good sources.
  74. True Or False ?
  75. titrations and pka's
  76. rubber band thermodynamics
  77. SWE for Lithium
  78. Chem lab, titration neutralization
  79. Thermodynamics Sign Problem
  80. SN2 reaction speed, NaF in hexane vs. acetone
  81. Frequency and Location of Genes
  82. Quantum Chem, ground-state energy
  83. Calculating heat
  84. Cell Stoichiometry
  85. Heat of formation problem!
  86. First-Order Kinetics and Activation energy
  87. Chemistry
  88. Chemistry HW Help!
  89. The Iodination of Acetone lab- Need help with determining the reaction orders
  90. Resonance structure of nitrous oxide
  91. Cis/Trans isomerism in Alkenes
  92. Titration of strong base + weak acid
  93. Mole equation
  94. Freezing point depression
  95. Alkene reactions
  96. Crystal Structure Lattice Problem
  97. Balancing Redox Reactions
  98. Kp problem with total pressure given
  99. Thickness of mantle
  100. stuck on chem hw HELP
  101. Help Please! - The Hollow Scape of a dandelion
  102. NMR NOESY spectrum -- Please help! "trans-9-(2-phenylethenyl) anthracene"
  103. Viscosity Average Molecular weight using GPC data and Mark–Houwink-Sakurada equation
  104. Sulfur trioxide hybridization
  105. Biology question-modification of stem
  106. Balancing chemical equations and calculations using equations
  107. polyprotic ph problem
  108. Two questions about physiology lab?
  109. sp^y orbitals and nature of bonds
  110. Chemistry - Reaction Mechanism
  111. Calculating Final Temperature
  112. Calculating Standard Enthalpy
  113. Transition metals and orbitals
  114. Thermodynamics: polytropic processes
  115. Organic Chem [Napthalene and benzoic acid]
  116. Phase change question!
  117. Why is bubble present, in this redox reaction?
  118. Thermochemistry help!
  119. Change in chemical potential
  120. Wedge-and-dash Molecular Structures in 2-dimensions
  121. Endpoint Titration
  122. atomic radius
  123. Titration of a weak acid.
  124. Titration question 2!! equivalence points. Am i right?
  125. Hemoglobin and p450 oxygen binding
  126. Ionisation Energy of Hydrogen
  127. Oxidation of Organic Chemicals
  128. Tacoma Bridge
  129. Any insights on the Lymphatic System?
  130. Hydrous or hydride
  131. Photoelectric Effect
  132. Enthalpy of a Reaction
  133. Questions on polar and nonpolar molecules
  134. Naming monodentate ligand complexes
  135. mass spectrum
  136. Organic Chem 1- (S) vs. (R)
  137. Hydrogen and hydroxide concentration
  138. Balancing redox reactions occurring in acidic solutions
  139. Synthesis of aspirin
  140. Oxidising capaities of household bleaches
  141. Brain storming some issues in Applied Genetics
  142. Specific Heat experiment
  143. Chem: Why more heat released from steam than liquid water?
  144. Biology help .. Please check if iam right
  145. Limiting Reactant and gases
  146. Pectinase Enzyme Experiment
  147. radical bromination of 2 methylbutane
  148. Why did they use these formulas for energy of electron.
  149. phospholipids characteristics
  150. Whole chromosome preservation through generations
  151. Does adding different solid affect the quilibrium?
  152. Balancing Equation using redox reactions?
  153. Mr of a hydrated sodium carbonate
  154. Determining the molality of a solution
  155. Term Paper: "Is the brain immunologically privileged?"
  156. misture question..
  157. Half-cell method
  158. oxidation numbers.
  159. basic chem question?
  160. Need help finding pH
  161. Calorimetry - Calculating absorbed and released heat
  162. barium peroxide
  163. Equilibrium Titration?
  164. Which is More Acidic?
  165. Help to two pedigrees
  166. Percentage yield calculations
  167. Biology fishes
  168. Number of protons in a 5g orbital
  169. Height of Volcanoes
  170. Clasifying semiconductors according their molecular form
  171. Hess's law Help
  172. Preparation of alkenes from alcohols
  173. Le Chatlier's principle with a gas
  174. High temperature polymers
  175. Calculating the excess reagent remaining at the end of the reaction..help!?!
  176. Chem question
  177. lewis dot structures of complex molecules
  178. autocatalytic reaction and rate of reaction
  179. Molecular Weight and BP, MP
  180. Chem question 2
  181. Redox
  182. Ion exchange and stability constants
  183. A sample containing H[SUB]2[/SUB]C[SUB]2[/SUB]O[SUB]4[/SUB] was dissolved and all of
  184. significant difference
  185. In a solution of 0.10 M H2SO4, the ions present in order of decreasing order.
  186. Surface reconstructions of lattices
  187. yielding stress
  188. stress strain diagram
  189. Fusion in the Sun
  190. radioactive decay
  191. make something radioactive
  192. Determining Functional groups - carboxylic acid, ester etc
  193. "verify that the number of atoms..." Avagadro's constant
  194. Equilibrium question
  195. Calculator Help.
  196. Campbell Biology
  197. Two separate flasks are each filled with a gas at 25 degrees Celsius; the valve betwe
  198. Why not CO2?
  199. Basic Stoichiometry Question
  200. Probablity of the next child?
  201. Balancing Chemical Equations Using Oxidation Numbers
  202. Identifying Spectator Ions
  203. Quantitative Titration - NaOH and HCl
  204. pH of water in limestone
  205. LeChatliers Principle with Solubility
  206. solubility
  207. Is delta enthalpy zero for....
  208. [B]Molecular Thermodynamics
  209. Rate constant and temperature
  210. Question involving Gas Laws: A 6.0L flask...
  211. Clausius-Clapeyron
  212. Sn2 rxn
  213. Unsuitable market enzyme
  214. Thermochemistry Problems
  215. standard enthalpies of a reaction
  216. Quantitative Titration
  217. Specific Gravity of LNG
  218. Lattice Energy - Hard question - I keep getting wrong answer
  219. Summation of reversal potentials in neurons
  220. Which H the base will extract?
  221. How many molecules of H2O in 100kg of snow?? dont know where the density comes in!!
  222. Estimating Vapor Pressure and Vapor Mole Fraction
  223. Proteins' incorporation as a digestive enzyme in lysosome
  224. 1% iron solution??
  225. Using Ideal Gas Law to find P, V, or T
  226. hidrogen bonds question
  227. inter molecular strength
  228. Termodynamics: heat supplied with loss of mass
  229. I need help in Biology
  230. Intro Fluid Dynamics homework question
  231. Silver-Cadmium Electrochemical Cell
  232. Difficult equilibrium question
  233. Solubility Problem
  234. Can you anyone help me to set up a ice chart for this one?
  235. quastion in Biology
  236. Arcylic Acid - Reducing Or Oxidising Acid ?
  237. Anatomy help
  238. Preparation of esters & Keq
  239. does the APF depend on the temperature
  240. School Project - Global warming
  241. Chem Poster Assignment Help: Rates, Condition and Chem Rxns.
  242. is there any corrolation between thermal conductivity coefficient and molecular wi
  243. help with a project
  244. Bonding, Nonbonding and Antibonding MOs
  245. Distillation
  246. Acid base reations
  247. Molar Enthalpy of Neutralization
  248. How do I know where each component of a reaction goes within a galvanic cell?
  249. Evolutionary Game Theory question
  250. Enthalpy Lab!
  251. Calorimetry Problem.
  252. Ideal Gas Problem
  253. Population Dynamics!!
  254. NMR spectrum
  255. URGENT Chemistry Stoichiometry Help :S
  256. Ideal Gas Law Problem
  257. Why use mann-whitney U test rather than independent sample test?
  258. Hydrogen-powered car relations to science?
  259. Biochemistry Lab!
  260. Biology test questions - How are my answers
  261. Niches and Species
  262. Confused about equilibrium constant K
  263. 40.0g NaCl that is 90% by Mass, find Mass
  264. Chemistry, Need to know
  265. Chemistry: Stoichiometry
  266. Stoichiometry: confused about the question
  267. Radiant energy
  268. Equilibrium of electrochemical cells
  269. Acid's and Bases
  270. Genetics help
  271. Melting ice using latent heat and heat of fusion
  272. Food Microbiology Biochemical tests URGENT
  273. Study guide for AP Chem midterm! HELP PLEASE!
  274. Need help on two questions (electron configuration and stoichiometry
  275. Guidance on finding the pressure and density of nitrogen
  276. Applications of Equilibrium Constants
  277. Chemistry: Comparing the Rf values of carotene and lycopene?
  278. CHEM: Calculate the volume of water expected if the yield of ester were 100%.
  279. Wavefunction of a one electron species?
  280. Work done by an Ideal Gas
  281. reaction question..
  282. Number of Carbon Atoms
  283. What is the magnitude of the force?
  284. Trophic Levels
  285. Binding energy calculation of a nucleus
  286. Titration from basic end point to acid endpoint
  287. Some quick and simple help please - Tetrahedral Compounds
  288. How to predict?
  289. boiling an egg at high altitude
  290. Equilibrium
  291. ethanol and water mixing
  292. Density of a Metal
  293. Biology - Respiratory Chain
  294. science fair project help please!!!
  295. Energy is needed to "drive" an ecosystem
  296. balancing constant question..
  297. Finding Planck time in terms of [G], [h], and [c]
  298. Density distrubution and solar lifetime of the sun
  299. Mass of oxygen
  300. HELP!!! Pressure Change for equation without volume
  301. Molecular Formuals from Empirical Formula Help Please!
  302. Rate of Reaction problem
  303. Chemical Equilibrium with individual reactions
  304. Conceptual question (pressure)
  305. Chemistry; reaction rate -- completion
  306. pH concentrations, strong acids and water
  307. Excited States and Ionization Energy
  308. plantae protist and diatoms evolution
  309. How are plantae protists and stramenopila (diatom) different and similar?
  310. How are plantae protists similar and different from plant cells?
  311. friction
  312. Question on the Boiling point of NaCl solution.
  313. Enthalpy of Formation
  314. Szabo, A.; Ostlund, N. S. (1996). MODERN QUANTUM CHEMISTRY Exercise 3.21
  315. Molar Concentration
  316. delta H for 25.0 g NaOH in 100ml of 31.5% HCl
  317. Need Help
  318. Chemistry (halogens)
  319. Can you help me please
  320. Arrhenius Equation problem
  321. significant digits in calculation
  322. Help with a thermodynamics problem, calculate energy transfer?
  323. Membranes, proton pump/ cotransport
  324. Concentration in M
  325. Simple Genetics question
  326. Molar Volume and Molal Volume
  327. beginner analytical chemistry question
  328. solving this question in a certain way..
  329. Interesting Chemistry Question (Metals And Non Metals)
  330. Oxygen saturation in a sample.
  331. Gas Chromatography - Organic Chemistry
  332. Alkane Nomenclature
  333. Reaction Rates & Gases question
  334. How can I balance an Equation?
  335. acid affecting an equilibrium
  336. NH3 versus NH4+
  337. sodium hydroxide and hydrochloric acid
  338. Nomenclature & Cis-Trans
  339. What is the percentage of ammonia in the sample?
  340. Need help on plants!
  341. Rate Law problem
  342. propertes of material
  343. standart potential
  344. electroliz potential question
  345. electron transition
  346. NWCTA M2 project
  347. weight percent concentration calculation with partition coefficients
  348. Molar Heat of Fusion experiment question!?!
  349. mathematical relationship between reaction time and reaction rate HELP!
  350. Difficult organic reaction
  351. equilibrium question..
  352. Titration of Sr(OH)2 by HCl. What is the pH?
  353. Writing net ionic equations (having problems!)
  354. BIG BANG -Inference about movement of galaxies?
  355. Ast HW help.
  356. how to calculate density from specific weight in imperial units
  357. first ionization energy
  358. Aspirin/Ibprofen Solubility in Water vs Benzoic Acid
  359. A few chemistry questions!
  360. Specific Heat Capacity
  361. Sizes of atoms
  362. Find mass of product when given Kc, mass of reactant, but not volume
  363. Moles - Why do chemists use them?
  364. 2Al + 3CuCl2 --> 3Cu + 2AlCl3 Mass of Cu = ?
  365. URGENT:Sources of Error that Impact the Percentage Yield
  366. Simple pH Problem (If I could remember!)
  367. Identify Gas based on Temperature and Speed of Sound
  368. what will be change in enthalpy when heat is supplied at constant volume?
  369. How really slow neutron formed???
  370. Concentration - Help please
  371. Finding Molar Mass of Unknown Gas
  372. Atmospheric Chemistry, where to start?
  373. Chemistry - Reactions - Gas given off and solid remaining after heating
  374. atmospheric chemistry - how to find a wavelength
  375. Prove a^5 congruent to a (mod 15)
  376. Very basics general chem questions.
  377. Gibbs function
  378. Chemistry: Combined Acid-Base and Redox Titrations
  379. identifyin unknown compounds
  380. plz help me here atmospheric chemistry question urgent --:-( got test tom
  381. Help on empirical formula
  382. Moles
  383. Buffer Question - With addition of OH-
  384. Micropipettes??
  385. Gas Effusion Rate
  386. Beer's Law slope
  387. When an isotope is written out vs. writing out something on table of element chart
  388. Rate Constant Graph
  389. Open-Circuit Potential
  390. Zn---Zn+2 + 2e-
  391. Urgent! Acid & Base reaction?
  392. Finding Empirical Formula Question
  393. {Thermochemistry} Hess' law problem
  394. Electrochemistry Lab
  395. Identifying a bacteria
  396. Dimer-Monomer Percentage
  397. any one taken (bio150)
  398. Resistance versus temperature in weak acids, strong acids, and water
  399. Help
  400. Filtration-Ice cold solvent
  401. Kp and Decomposition (Chemistry)
  402. combustion
  403. Gas laws concerning pressure & temp.
  404. Density of a gas
  405. Electrochemistry Lab Part C
  406. Help with calculating ΔE
  407. Reaction Rate Experiment - Concentration
  408. Energy liberation in ionic bonding
  409. Batteries
  410. Specific Gravity Question - Please check my answer
  411. Density Problem - Please lookover my answer
  412. Isotonic Solution
  413. Hydrogen & hydrocarbon fuels...
  414. biology life span of nerve and red blood cells
  415. Thermochemistry Help: Finding the final temperature of a mixture.
  416. Lattice Parameter c of HCP
  417. Thermochemistry Help Again! How to find mass?
  418. Isotopic mass, or maybe just a silly math question
  419. Spectrometer/ electrolytes
  420. Organic Chem - Identifying Functional Groups
  421. Enthalpy of Reaction (Hess's Law)
  422. Immedaite Help>> Is required
  423. Thermodynamics of Reactions with Glucose
  424. Determining molar mass by freezing point depression lab!
  425. Question about the concept of Reaction Rate
  426. Ethanol and Cell Membrane Permeability
  427. Making Calibration/Standard Curves
  428. Molecular Geometry: NH3
  429. Chemistry Equilibrium Lab Question
  430. Titration and Calculating pH
  431. Seperating potassium sulfate and mercurous sulfate
  432. micronucleus assay
  433. Structural Geology: Fault Correlation
  434. Affects of Adding Water to Cobalt Chloride Equilibrium
  435. Economics
  436. Qualitaive analysis of anions
  437. What is the molar mass of the unknown?
  438. Check my Answer - Let me know if its right or wrong
  439. monochlorination of methylcyclopentane problem!!! help
  440. Reasons why % yield would be so low, synthesis of zinc iodide
  441. Binomial Probability Distribution
  442. Specific Heat Problem
  443. Composition
  444. Chemical Reactions
  445. Sig figs in answer? How does this work?
  446. Friedel Krafts Acylation
  447. Chemistry number of atoms
  448. Acid, Base, and Le'Chatelier's Principle
  449. IR spectra interpretation
  450. How to solve for viscosity using Stoke's law
  451. Calculating the Equilibrium constant of a redox reaction from its half reactions
  452. BIOMECHANICS - TORQUES and MOMENTS
  453. Qualitative Anion Analysis in General Chemistry Course
  454. Chemical Compound Formula
  455. Pressure Equilbrium Question
  456. Maxwell-Boltzmann Distribution for Liquids and Collision Theory
  457. Chemical Kinetics: Reaction Mechanism
  458. Chemical Kinetics: Reaction Mechanism (My working attempt shown)
  459. Dilution and strength
  460. Acidity of nitrophenols
  461. Molarity question
  462. Mid-Term Biology (Intro to) Practice
  463. Rates of chemical reaction
  464. Electrostatic Effects and Energy Level Splitting
  465. Calculating free energy at vaporization
  466. Statistical thermo (diatomic molecule w/harmonic oscillator)
  467. Balancing a redox reaction involving only one apparant product
  468. Silver Nitrate and Sand
  469. hi i need some help
  470. Buffer calculations - Help...
  471. NMR Specstroscopy
  472. Colligative Properties
  473. Percent Ionization Ka
  474. Molar concentration
  475. Rate of Reaction
  476. Quantum Numbers and Total number of Orbitals
  477. Calculating pH for Strong Acid-Base Titration
  478. Determing Molarity. Did I do it right?
  479. What makes an oxidation state common?
  480. Chi Square Analysis of Phenotype Problem
  481. Salt Solution problem
  482. Cross TTBbRr with TtbbRr
  483. mass percent related problems
  484. Correlate the observations with Le Chatelier's principle?
  485. NMR spectra analysis
  486. Acid & Base titration curve
  487. Reaction Question
  488. Having trouble with understanding Electrophoresis
  489. How to calculate the pH
  490. Hybridization @___@
  491. Finding unknown substances and masses
  492. Mass Percent Equation
  493. Organic Chemistry Multistep Synthesis
  494. Acid dissociation in water
  495. ENTHALPY ???? Concept Undestanding help
  496. Equilibrium chem lab (FeSCN2+)
  497. Using NaCl to conduct electricity?
  498. Concentration: Titration and Gravimetric Calculations
  499. Enthalpy and stoichiometry
  500. need help on ozone chemistry anyone?
  501. Unknown SPecific Heat Capacity
  502. Quick titration question
  503. calculating entropy change
  504. Effect of Temperature on enzymes
  505. Astronomy Question
  506. Effective Nuclear charge
  507. calculating work
  508. If the Earth's axis was tilted 45 degrees..
  509. Ground or excited states.Please check.
  510. Valence Orbitals.
  511. Using ice in the combustion of Paraffin and Methanol
  512. Rate of Reactions Help.
  513. Balancing Redox Reaction
  514. chemistry 12th grade...please help
  515. Lewis Acid or Lewis Base?
  516. Why is the Kjeldahl method insufficient, the detection of melamine in dairy products?
  517. Fractional distillation of crude oil
  518. Chemistry 30 Redox tables
  519. Blance the chemical by algebric method ?
  520. Cloning using plasmid
  521. Van Der Waals Forces
  522. Entropy change explanation
  523. Inorganic Compunds
  524. Rates of Effusion
  525. Angular momentum (L) in z-axis of hydroxyl radical
  526. Flow of energy through living organisms
  527. IB past paper, chemichal bonding
  528. RNA transcripts size
  529. quick question on plotting graph/stuff
  530. A chemistry problem
  531. Plasmid mapping
  532. van der waals equation question
  533. Order Rate
  534. Chemical Reaction Problem
  535. I'm having trouble reading proton NMR!
  536. Thermochemistry Homework Problem
  537. Henry's law (finding moles)
  538. What does kinetically favoured mean?
  539. REDOX Titration
  540. Electrochemistry - HW
  541. What is the Empirical and Molecular Formula of Caffeine?
  542. reaction mechanism
  543. Physical Chemistry Question (work done during decomposition)
  544. Non- Ideal Mixtures- positve deviation from Raoult's Law
  545. Grams are same when looking for limiting reactant?
  546. Biochemistry - Calvin Cycle Question
  547. Biomechanics
  548. Elimination vs substitution & ethanol as a solvent
  549. Inorganic Chemistry. Calculating Ksp
  550. semiconductor
  551. Simple precipitation question?
  552. Sulfur in fertiliser
  553. Genetics recombination questions
  554. Please help! Calculate the % hydrolysis for 1 M Na2CO3 if [OH-] = 5.4x10^-(4).
  555. Formula and Combining Compounds
  556. Ions
  557. Organic Chemistry: No. of chiral centres in Camphor
  558. Help with heat reaction experiments
  559. Should I use a T-test?
  560. Boiling water with ice
  561. Boiling Point of Nitrogen References
  562. Is paramagnetized liquid oxygen itself a magnet?
  563. URGENT PLEASE HELP!! Chemistry Related Math/Hydraulic Problems I Can't Get
  564. Help on how to plot the Rayleigh line for a flow?
  565. Exothermic
  566. Biochemistry-Inhibitor Question
  567. Gases produced in double displacement reactions
  568. I Really Need Help! Chemistry: Synthesis of a Coordination Compound!
  569. Standard enthalpy of formation
  570. Help Asap :(
  571. Half Skulls and Forelimb Sets
  572. electrochemistry electrode labeling
  573. calculating mass of inner core in Kg when i only have the density
  574. Mass Spec- breaking the benzene ring
  575. It's all about moleeeeeees.
  576. What is the maximum work done by NiCd with 1 mol used?
  577. Kidney function question
  578. I need help with chemical equilibrium problems
  579. Distance from gamma ray?
  580. conjugate bases
  581. Bradford Method Lab
  582. difference in oh-
  583. Understanding Kinetic Molecular Theory and Graham's Law
  584. Usage of Calculus in Chemistry
  585. Quantum Theory (physical chemistry)
  586. Specific and Latent Heat
  587. Positive and Negative control
  588. Nernst Equation Problem
  589. Urgent! Very confused in chemistry?
  590. Endoplasmic Reticulum (Rough and Smooth)?
  591. Titration Mass Problem
  592. Contact Process
  593. Why is Ethanol flammable?
  594. Finding minimum concentrations in a buffer solution
  595. HELP!!! concentrations of ions
  596. Griniad Reagents Reactions
  597. Michaelis-Menten Drug Kinetics - Please Help!
  598. Wave Question
  599. Experiment(Determining the reaction order)
  600. Astronomy Help
  601. Rxn Mechanisms and Rate Laws
  602. Galvanic Cell Conceptual Question
  603. Temperature's affect on Galvanic
  604. Thermal Physics - Methane Fuel Cell
  605. Chemistry-equilibrium reaction question
  606. Orbital Shapes Help
  607. X-Ray Diffraction Equation (Mineralogy HW)
  608. Probably and obvious chemistry question
  609. Increasing the volume of solution lowers experimental error?
  610. X ray Diffractioin
  611. need help on Isotopes
  612. Isomers: Geometric and Diastereometric Isomers
  613. Composition Determination
  614. The cardiac cycle
  615. Asymmetric Aldol Synthesis
  616. pH of sodium acetate
  617. Conceptual question: Volume in Gas Laws
  618. Chemistry: titration of an unknown amino acid
  619. AP BIO; asexual and sexual reproduction
  620. ksp from electrochemistry setup
  621. Simple Hess's Law Problem
  622. Help !
  623. lewis structure, hybridization and VSEPR
  624. Standard Addition Chemistry problem
  625. how to find the mass of a compound given the half life and activity?
  626. Volume of Gas At Standard Condition ? Which Gas Law ?
  627. Molality to mass
  628. Thermodynamics Question
  629. Gen. Chem. 2 Lab assignment help
  630. How do I convert words to equations?
  631. Q=MS∆T Question
  632. Hardy-Weinberg Equation
  633. Finding volume needed for buffer
  634. magnetisation curve
  635. Half cell potentials
  636. dQ = −TdS(produced)
  637. Thermodynamic Entropy question
  638. Clausius-Clapeyron equation and enthalpy
  639. Coexistance Curve
  640. Cohesion-Adhesion-Tension Theory
  641. Solubility and Gibbs free energy Qs
  642. Equilibrium expression
  643. Chemisty-Heat capacity of calorimeter
  644. Cell potential
  645. Genetics Pedigree Diagram
  646. Chemical vs Physical change/property
  647. Theoretical Yeild
  648. Organic Chemistry Reaction
  649. Chemistry - pH of solution
  650. Chemistry pH of solution.
  651. CHEMISTRY- another pH question
  652. Chemistry - PbBr2 Precipitate
  653. Chi- squared test
  654. Question about circuit potentials
  655. Chemistry Homework: Calculate Enthalpy Change
  656. What's more soluable in water?
  657. Redox rxn help
  658. Voltaric Cell/Cell Chemical Reaction
  659. Molarity to grams
  660. Electrochemical cell
  661. Distinguishing the difference between E/Z configuration
  662. Second equivalence point
  663. Heat Capacity, unknown metal
  664. Acid/Base Solution question
  665. Thermodynamics for P Chem NEEd HELP By tomorrow!!!
  666. Determining mutated, mRNA, Amino Acid sequence
  667. How to find integrated peaks on NMR graphs
  668. AP Chem Acid and Base Equilibria
  669. Chemistry
  670. Titrimetric Analysis
  671. Equilibrium pressure and Kp
  672. Titration of Nitrous Acid with Sodium Hydroxide
  673. Acid-Base reaction help
  674. Radioactive Decay
  675. OCHEM mechanism
  676. OCHEM transition states and reaction rates
  677. Finding pH of a buffer with polyprotic acid
  678. Henderson Hassalbach equation problem
  679. Phosphate buffer calculation
  680. How many grams CH3COONa do I need to create this buffer?
  681. What percentage is in the form of neutral molecules?
  682. Energy problem - ice melted by burning ethanol
  683. Redox titration (calculating percent iron in sample)
  684. enzymes
  685. Number of balloons filled from a tank of helium
  686. Thermodynamics
  687. Lewis Structure
  688. Are Sulfate Salts Acidic or Basic?
  689. Lab Investigation of factors that affect the rate of reactions
  690. Chemical equilibrium
  691. Finding Molecular formula from a given molecular mass and equation.
  692. Titration Question (High School Chem)
  693. pH measurements and applications
  694. Name of the Following Acid Compounds
  695. Polymer Question
  696. Chi- squared test--please help
  697. Biomechanics help!
  698. A level Chemistry relationship between...
  699. Chemistry: acid base moles EMERGENCY PLEASE HELP!
  700. Determining rate constant and reaction order
  701. Oxidation
  702. relationship between midnight line and international date line
  703. Absorbance of diluted solution
  704. Amount of receptors required for depolarisation of post synaptic membrane.
  705. Finding cell emf in a concentration cell
  706. [Chem] Buffer solution with acetic acid
  707. Q in Oxidation and reduction I want chack my answer
  708. Chemistry 1 hydrated crystals lab
  709. Why heat of combustion is not the reverse of the heat of formation
  710. need help with understanding synthesis equations
  711. Ammonium vandate(V) and dilute hydrochloric acid equation
  712. Soda Clocks?
  713. In trigonal bipyramidal geometry
  714. Which of the following is the most polar bond?
  715. Atomic emission spectra
  716. Calculating FeSCN2+ Molarity
  717. Empirical Formula of a Hydrate
  718. partition law
  719. Absorption bands on electronic spectra
  720. Acid/Base Titration
  721. Steady state approximation question.
  722. Vbt
  723. Kf of paraffin
  724. Hydrocarbon molecular weight grade 11
  725. Molar concentration
  726. Chemical Kinetics Lab Help
  727. Calorimetry help (chemistry)
  728. ndicator of excess of sodium bicarbonate (HELP)?
  729. solubility
  730. Finding change in concentration over change in time
  731. Why does cornstarch burn?
  732. What is the Importance of Cell Differentiation?
  733. Molar Mass by Freezubg point
  734. Enthalpy of Reaction
  735. Atoms contained in Ar
  736. Physical Oceanography / Tide Problem
  737. put in order from most to least important (easy)
  738. Calculating percentage yield lab..i really need help?
  739. Help! Identifying a unknown aromatic ketone--we're stuck in a rut!
  740. transcriptional vs. translational fusion
  741. help on equilibrium
  742. calculate ratio of BOD to COD given fs value for glucose
  743. Calc. the effluent inert particulate conc. from a CSTR w/w/o solid liquids separation
  744. Manganese (II) chloride and sodium hydroxide
  745. What energy does the sun produce?
  746. Interview for science about compost PLEASE answer
  747. Irreversible Expansion
  748. Photon - Is it really a wave?
  749. Did I do these pedigree charts correctly?
  750. ap chemistry end of the year ideas
  751. Dilution question
  752. Reactions in glycolysis
  753. Gravimetric Analysis- precipitation method
  754. Suicide substrate and kinetics
  755. Chemical Equilibrium (Need Fast)
  756. How to work out Electrical Energy
  757. Industrial Uses for Nuclear Energy?
  758. Determination of Atomic Masses help
  759. solution stoichometry, attempted ANSWER IS WRONG, can anyone fix answer
  760. ocean water is found to contain 7.2 g of NaCl, what is the molarity ?
  761. Help - Hypochlorites effects on chelating towers
  762. Chem oxidising agent
  763. What simply is Chemical Energy?
  764. Equilibrium Solubility Question
  765. Introductory to chem course Stoichometry question wrong answer, can anyone fix it
  766. Freezing point
  767. Finding mixture concentration using Beer's Law
  768. combinatorial mathematics
  769. K_a and K_b
  770. GC help
  771. What makes water drinkable?
  772. proust atom model
  773. Ethene + Steam = Ethane and perhaps a magical unknown substance
  774. Lab Final - finding molar mass of an unknown gas
  775. Enantiomers and isomers of c6h12
  776. biology and the DNA/nucleotides Please help due tomorrow
  777. When does 226Ra become "safe"?
  778. Buffer and pH
  779. Nuclear Chemistry
  780. statistic data files for SPSS
  781. Density of NaCl
  782. Isothermal reversible condensation
  783. Which one is reducing and which is oxidising?
  784. Role of salts in extraction
  785. Is Sodium Benzoate soluble in HCl, NaHCO3 and NaOH?
  786. Please help me with this chemistry homework
  787. Basic Chem - Molar Percentage problem.
  788. Iron UV spectrometer
  789. The pH meter?
  790. Organic CHemistry: Improving existing products
  791. Brown discharged of Sandfilter
  792. Help with writing half reactions for the following
  793. Ap Chem: dimensional Analysis
  794. A fathom is a method for measuring lengths, usually reserved for measuring the depth
  795. Reaction of Manganese and hydrogen peroxide
  796. Find the height or length of these of these natural wonders in kilometers , meters
  797. Distribution of complex ions between aqeuous and organic layers
  798. Where is the oxygen reduced?
  799. Hydrogen peroxide as an oxidising agent
  800. Identify an organic unknown with only spectroscopic data
  801. Oxidation states of manganese and pH
  802. A room is 25 ft long
  803. For the tringle shown what are the :
  804. standard entropy of formation ??
  805. 'magnitude (in kJ/mol) of energy barriers to rotation from anti to gauche'
  806. Equilibrium
  807. Converting parts per million (ppm) and mol of ions
  808. properties of berrylium
  809. Nitrogenous base
  810. Help With Pi Code Clue
  811. calibration curve and concentration??
  812. Sacrificial Anodes and Oxidation Number of KMnO4
  813. finding mole and name of elements
  814. Rusting - Exponential?
  815. Raoult's law - Vapor pressure
  816. Galvanic Cells and Cl2 Gas
  817. Cell Notation
  818. Solubility Constant vs Aqueous solubility
  819. how to differentiate phenol, acetic acid, aniline & nitrobenzene
  820. Reduction of benzophenone to diphenylethanol
  821. What would reduce copper
  822. Determining compound from IR and mass spec
  823. Equilibrium Question
  824. Organic Major Pathway prediction
  825. stoichiometry
  826. Reaction order/constant, time dependent pressure
  827. Combining of two gases within an airflow
  828. Why can't alcohol react with aqueous NaOH?
  829. Electrons and protons
  830. bond angle.
  831. Biology Homework Question
  832. Writing out chemical equations
  833. Chemistry - Reaction in humid air
  834. Moles remaining after a reaction
  835. Difference between heat, thermal energy, and temperature
  836. Lab on Photosynthetic Pigments/Absorbance
  837. Solubility of chlorophyll and carotenoids
  838. Biology Homework Question
  839. Chemical Kinetics: Rate Laws, Orders
  840. Question about Krebs Cycle
  841. Cellular Respiration Hwk Problem
  842. Coupled Reactions
  843. How to write chemical equations
  844. Concentrations
  845. Atomic Ratio and Ratio of Mole Fractions
  846. Name the crystal spinel from the image.
  847. Enthalpy, heat of neutralization, calorimetry
  848. Thermochemistry: Heat of a Solution
  849. galvanic cell
  850. Relationship between Interaction Energy and Melting Temperature
  851. Ideal Gas Eqn Help
  852. lead acid battery experiment reaction
  853. Algae (Irish Moss)
  854. Beer's Law
  855. Thermochemistry Help
  856. AP Biology HELP!
  857. Not understanding how to determine Stoichiometric air to fuel ratio...
  858. Complete the chemical equation
  859. Genetics dihybrid cross
  860. Genetics Hwk Problem
  861. Genetics: Colorblindness and Blood Type
  862. chemistry? What physical and chemical change occur when a wax candle burns?
  863. Ionic equation
  864. Genetics polygenic inheritance & probability
  865. Genetics: Mapping and Recombinant Frequency
  866. Genetics:Transcription
  867. Genetics: DNA & mRNA sequencing
  868. DNA base pairing calculation
  869. Recombination Freq.: Genetic Mapping Hwk Problem
  870. DNA Sequencing hwk problem
  871. Normality of a solution of given Molarity
  872. Extract these materials from a mixture?
  873. Nucleation and Seeding
  874. 1986 AP Biology Multiple Choice Key
  875. Mechanism for reaction of Grignard reagent
  876. Are all pigment types found in all plants?
  877. Chemistry Lab equations :(
  878. Finding the molar mass of air
  879. Biology on cells structures etc..
  880. Enthalpies of formation. burning methane in oxygen can produce three different carbo
  881. How to Calculate the pH of a Buffer Solution
  882. Chemistry Solubility Problem -HELP!
  883. Chemistry Qualitative Analysis of Solubilities...HELP! :)
  884. Calculate the molar mass of a gas that has a density of 0.6536 g/L at 37C and 787 tor
  885. How to count molecules and determine density, partial pressure and total pressure???
  886. When do you use 1 mol = 22.4 L and 1 mol = 24 L?
  887. Astrophysics: orbital dynamics - duration of a transit of Venus
  888. Statistics Question
  889. Theoretically possible to reduce m-nitrophenone to 3-ethylnitrobenzene -H2,Pd/C,45psi
  890. Help with Sample Skewness
  891. covalent compounds
  892. Passive Absorption of Quinine in Stomach vs Ileum
  893. hybridisation
  894. Help with addition NaCl to water
  895. Lead Sulfate battery
  896. Unit Conversion - Van Der Waals "a" Constant
  897. pH in a Nuclear Reactor
  898. Electrolysis, charge of ions.
  899. Chemistry very easy please help I forgot how to do this
  900. pH INDICATORS....I DONT GET IT :(
  901. Weak/Strong Acid w/ Strong Base Titrations and pH Indicator Selection Help
  902. Van der Waals Graph
  903. Using polyprotic acid as a titrant
  904. Evolution of Carbon dioxide from Sodium bicarbonate and potassium hydroxide??!
  905. hydrocarbons analysis
  906. Chlorophyll Fluorescence
  907. Stats experts, GTHIH!
  908. Find the Formula of compound X
  909. Calculating D-Value (Microbiology)
  910. need help with statistics
  911. Im stuck in this statistics problem
  912. Homeostasis in digestive system
  913. need help with statistics
  914. Boyle's Law
  915. aspirin (salicylate) nomogram
  916. What is the concentration of bromide present in a 0.659 M. solution of CaBr2
  917. Moment of Inertia for the Sun - Fluid Mechanics
  918. Strongest to Weakest Oxidant
  919. Physics behind Crumple zones
  920. Exothermic reaction moves forward with increase in Temp?
  921. plasma characteristics problem
  922. Nuclear fusion
  923. Poly(p-phenylene-2,6-benzobisoxazole) - Zylon
  924. Enthalpy problem
  925. Ideal Gas Equation
  926. Chemistry Density Problem
  927. Easy Chemistry Problem Please Help
  928. Beer's Law Question
  929. phosphoric acid titration calculation
  930. Electrolysis of a molten sulphate
  931. Structure & bonding questions
  932. Evaporation
  933. Chemistry nomenclature help
  934. Reaction of AgNO3, CaCl2, and Al2(SO4)3 with Ba(NO3)2 and then NaCl?
  935. Density problem to find grams?
  936. List the adaptations for thermoregulation (Squirrel Monkey, Snow Leopard +more)
  937. Carbon & Carbon-12 clarification
  938. Finding External Pressure Problem
  939. Finding density of a sphere and percentage error
  940. The Double Helix - Hydrogen bonding and stability
  941. Percent by Mass Chemistry Question
  942. Physical Chemistry
  943. Thermo residual properties
  944. Amino Acids and Hydrolysis
  945. What subject/field am I looking for?
  946. Content concentration
  947. Ocean Water Help
  948. Volume of amino acids
  949. Just a quick question...
  950. Finding atomic mass
  951. Hydrophobic interaction with water
  952. Estimation of number of Carbon atoms in bacterium
  953. help on chemistry problem
  954. Macroscopic containers and nanometer hole (Nanoscale systems)
  955. Confusing Chem
  956. What are Van der Waals interactions?
  957. Hydrogen vs Atomic
  958. Enzyme Activity
  959. How to solve buffer calculations-Biochemistry
  960. Particle in a Box
  961. help on chemistry problem
  962. Iodine Clock Reaction Question
  963. can you help me to balance this ! tnx !
  964. How to convert into moles
  965. Adding NaOH to a weak base
  966. Quick question regrading calculations and measurements in Science
  967. Fraction of total mass from Given Densities
  968. chemistry problem
  969. Concentation of Citric Acid in Fruit Juice
  970. Finding limited reactant (Chem 101)
  971. Chemistry- Electron Affinity...very confused
  972. Finding the excess after the reaction is complete (chem 101)
  973. Calculating temperature and pressure
  974. Molar Solutions with percent concentrations
  975. Dependency of electrolyte conductivity to temperature?
  976. Calculating Molarity
  977. Which solution turns purple when nicl2 is added?
  978. Stoichometry Help
  979. Binary star question
  980. Thermodynamics
  981. Heat Capacity
  982. Calculating mass of the atmosphere
  983. Law of Constant Composition
  984. Ap chem
  985. Biology dilution help.
  986. Concentration of solids and liquids in Chemical Equilibrium
  987. Binary star orbital inclination
  988. Chemistry Complex Problem
  989. Ap Chem
  990. Chemistry Mass Percent Question
  991. Chemistry: Not a Friedel-Crafts Reaction
  992. Chemical Equilibrium Problem
  993. hi guys ! can you help me to solve this ! tnx !
  994. Chemistry rate reactions
  995. Volume of Sulphuric Acid (Mass Percent)
  996. BIOLOGY(defin. of Phylogeny??!! URGENT!
  997. 1 Question!! (Phylogeny) HELP PLEASE~!
  998. Please help with decimal to floating-point conversion
  999. negative electrode and mass
  1000. Chemistry Mole calculations
  1001. Tough Problem on Chemical Equilibrium
  1002. help me about empirical formula
  1003. Degree of Dissociation
  1004. Calculate the mass of nitrogen dissolved
  1005. Water Hardness
  1006. Question about significant figures
  1007. Equilibrium Constant
  1008. Electrolysis C/W contd. Variables help
  1009. Find the rate constant, given temperature and activation energy.
  1010. thermodynamics
  1011. sig figs and qualitative v quantitative
  1012. instrumental analysis finding the concenration
  1013. another standard addition problem
  1014. e^2*pi*i, where from?
  1015. Glucose
  1016. Chemistry with a mass question?
  1017. Chemistry % composition question
  1018. how many moles of NH3 in the supplied solution0.2 M NH3 in 2 M Nh4NO3
  1019. Hess's Law - Thermochemical Equations
  1020. Calculating alkalinity and expressing it in "as CaCO3"
  1021. Simple Year 8 Homework! - Please improve my answer
  1022. Astronomy HW problem
  1023. Amino Acid Titration
  1024. Having trouble coming up with this equation
  1025. Vapour pressure and volatility.
  1026. how to calculate pH of two weak acids
  1027. Hydrothermal Vents
  1028. Net Ionic Equations?
  1029. Protein stability
  1030. Ionic Equilibrium
  1031. Solubility Product
  1032. Protein Alpha Helix
  1033. What's this shape called.........?
  1034. Polarity in a Bacterial Operon Question
  1035. Wavelength, emission spectrum, electron transitions
  1036. Finished Chemistry Coursework A*
  1037. Ionisation Potential
  1038. Calculating the molarity of ions
  1039. Weak acids and bases buffers
  1040. Physical Chemistry - vapor pressures
  1041. mass of earths atmosphere
  1042. Organic Chemistry - Polymerization of Propene to Polypropylene
  1043. Physical Chemistry-Gas Laws (Find R and M)
  1044. More Stable Electron Configuration For Copper
  1045. Thermodynamics - Find initial pressure (given Temperatures)
  1046. Emission spectrum for Helium
  1047. Find the molecular mass of acid in acid base neutralization
  1048. Please, please help with chemistry question?
  1049. Reactions in Solution
  1050. Back Titration Of Metal Carbonate
  1051. Coffee cup calorimetry experiment
  1052. How to find empirical formula from combustion equation
  1053. Please help with biology chemistry part
  1054. CHEM Buffers
  1055. Physical Chemistry- Maxwell Boltzmann Distribution
  1056. Nomenclature sturctures
  1057. Stoichiometry of a reaction
  1058. Is a first order reaction always slower than a second order reaction
  1059. Fractional Distillation
  1060. Electron falling between two orbits produces certain wavelenght of light
  1061. Hemodynamics Homework Help, Works shown please help!
  1062. Chemistry lab write up
  1063. Quick Thermo Question
  1064. Concentration Problem
  1065. Equilibrium constant (K) Question problem
  1066. Redox Reaction of Ascorbic Acid using IO3
  1067. Parameterization Question
  1068. Stronger bond= lower energy? why???
  1069. Thermodynamics Problem
  1070. Corrosion in sea water and HCl
  1071. finding Ka of various solutions
  1072. Isomers
  1073. Are all neutralization reactions exothermic?
  1074. Physical Chem Question
  1075. Chemistry question (Stoichiometry)
  1076. Calorimetry Problem
  1077. Environmental Chemistry
  1078. Chemistry Lewis diagram TeCl4
  1079. Enthalpy of a reaction question
  1080. Pka
  1081. Concentration of an original solution
  1082. Stereogenic centre of 3-methylcyclohexanone
  1083. Organic II - Reaction of Aromatic Compounds
  1084. range of the middle 75% of the data
  1085. Thermochemistry : What happens when too much hea tis added to a reaction?
  1086. Thermochemistry: would iron with a charge of +2 react faster or slower than iron +3
  1087. Please help me name the organic compound:)
  1088. Please help me name this compound
  1089. Balancing equation for creation of Potassium benzoate
  1090. Cofactors
  1091. Finding the Moles and Concentration
  1092. Copper chloride and conductivity tester
  1093. Effect of pH on enzyme activity
  1094. Calculate the flow rate of the etching solution
  1095. Calculating Uncertainties Question
  1096. Resonance Energy
  1097. Bond Enthalpy
  1098. ECG question...
  1099. Thermodynamics
  1100. Effervescent Antacid Lab! Need Help! Fast!!!
  1101. How to find frequency of gametes
  1102. Isobaric heating to find volume and temperature
  1103. Dieterici equation of state
  1104. Buffer question
  1105. Geosystems
  1106. How many moles of C atoms are there in 0.47 mole of Arginine
  1107. photoelectric effect help
  1108. Penetrating abilities for alpha,beta,gamma
  1109. Calculation of water of crystallization
  1110. beers law plot
  1111. Chemistry (VSEPR)
  1112. Chemistry: Buffer Solutions
  1113. finding ph from Ka
  1114. Chymotrypsin mechanism?
  1115. calculate the molar concentration of substrate
  1116. Thermodynamics Flow Question
  1117. Chemical Kinetics: do not understand anything
  1118. Redox Titration Question
  1119. The amount of water in reservoirs is often measured in acre-ft. One acre-ft is a volu
  1120. Entropy change for isothermal expansion of a perfect gas
  1121. Estimate the boiling temperature of HCN at 1 bar.
  1122. One gallon of paint (volume = 3.78 x 10-3 m3) covers an area of 25.0 m2 . What is the
  1123. Significant Figures
  1124. Slope of the line: Wheat germ extract
  1125. Vapor pressure vs liquid pressure in enthalpic combustion reaction
  1126. One cubic centimeter (1.0 cm3) of water has a mass of 1.0 10-3 kg at 25°C. Determine
  1127. Beer's Law Problem
  1128. chemistry , what the Balance of this equation
  1129. Determine the cost of using 2 different electrical devices over the course of a month
  1130. Type of Bond and Orbital
  1131. Neutralization reaction
  1132. Acid-Base Chemistry in Aqueous Solutions
  1133. Gas Problem
  1134. Calculating Ka and Kb values from estimated pH values
  1135. How to study for Chemistry test?
  1136. reversible adiabatic compression
  1137. acid-base
  1138. Chemistry Question
  1139. Cycloalkene Chlorination w/ Dichloromethane?
  1140. Why do Oxygenated fuels contain less energy than hydrocarbons?
  1141. Biochemistry: Glycolysis
  1142. The difference between structural unit and repeating unit?
  1143. Thermodynamics of a Perfect Thermal Insulator
  1144. Gases-chemistry
  1145. Mass Spec
  1146. Periodic trends
  1147. Mohr's Salt
  1148. Isoelectronic Ions problem
  1149. Bond Energy Question
  1150. 1 hard(?!!) Biology Question!!HELP! :/
  1151. <HELP!> One question about Meselson-Stahl experiment
  1152. question on triangometry .
  1153. question on triangometry, where i can put angle
  1154. chemistry pH question?
  1155. Confusing thermodynamic q
  1156. Dilution Help: Finding the volume of water needed
  1157. Finding the volume of one water molecule
  1158. what is the formula to use when found to time period and frequency the formula not w
  1159. A person travels by car from one city to another with different constant speeds
  1160. to convert mg to kg
  1161. The mass of rock is 2.4 kg anf its volume is 950 cm^3 .
  1162. Thermodynamics(Helmholtz energy)
  1163. Molar Mass of a Volatile Substance
  1164. Why can't hexane or toluene solutions dissolve in aqueous bromine?
  1165. Which one is a more stronger reducing agent/
  1166. Chemistry problem with molarity and ions
  1167. Entropy Change
  1168. Mass % of an alloy
  1169. Calculate Mass Percent
  1170. Thermo(concept Q, pic included)- How does internal energy increase but...
  1171. At 298K and 1 bar pressure, the density of water is 0.9970g/cm3, and Cp,m = 75.3 J/K
  1172. Bond lengths in Benzene
  1173. Halophilic bacteria growth
  1174. Physical Chemistry 1st Law of Thermo
  1175. Zwitterion help!
  1176. 4 very hard thermodynamics problems
  1177. Partial pressure of reagent in reaction
  1178. How To calculate molar concentration?
  1179. unusual dna structures
  1180. finding net, ionic and molecular equations
  1181. Reaction of gases/ gas stoichiometry
  1182. chemistry help, composition
  1183. A typical compound archery bow requiers
  1184. How To Calculate Percentage Yield?
  1185. Free energy and equilibrium
  1186. Research Paper Help
  1187. Calculate the percentage of nitrogen in air
  1188. Chemical equilibrium concentrations
  1189. Chemistry: Elements, Molecules and Bonds
  1190. Chemical thermodynamics
  1191. Economics problem help please, recession in US how it effects canad
  1192. Entropy, Free Energy and Equilibrium
  1193. pH determination in water sample
  1194. Carboxylation of sodium phenolate
  1195. entropy of a solution problem( please help)
  1196. Mean molecular weight question
  1197. Calculate melting point of ice under pressure
  1198. Incorrect dilution values per text implications.
  1199. Actual Bond of SeCl2
  1200. Mean spacing between Hemoglobin molecules
  1201. Thermodynamics generic equation applications
  1202. Calculating concentration of diluted solution by titration
  1203. Which one is a stronger acid?
  1204. Precipitation problem
  1205. density of the carbon atom
  1206. Effect of temperature on body stress
  1207. Hydrogen Transition
  1208. Increasing Bond Angles
  1209. Why would limiting reactant not be necessary to determine?
  1210. help
  1211. concentration calculation
  1212. Equilibrium
  1213. Chemistry- Sig figs
  1214. Enthalpy of the System
  1215. calculating expectation value of angular kinetic energy
  1216. Activation energy
  1217. Chemistry - Equilibrium problem
  1218. Chemistry Help (on behalf of someone else)
  1219. Chemistry pH question
  1220. thermodynamics
  1221. Calorimeter Constant?
  1222. Wavefunction and Electron Configuration
  1223. Bohr Model Vs. Shrodingers Mech. wave model
  1224. Mass of solution?
  1225. Average molecular weight?
  1226. Chemistry-TGhermodynamics Piston Cylinder Device question
  1227. Micelles
  1228. Relative atom and ion sizes
  1229. 2 Questions plz
  1230. Drawing Dimers and Cyclics
  1231. Electron Affinity
  1232. AP Chemistry
  1233. AP Chemistry
  1234. Charles's Law Problem.
  1235. Electron affinity of Cl and F
  1236. Combined Gas Law
  1237. "How much heat is evolved" Thermochemistry Question
  1238. D-glucose versus L-glucose
  1239. t-butyl vs. isopropyl subsitutions
  1240. Physical Chemistry
  1241. Dilution
  1242. Adding percentage uncertainty
  1243. Monochloro substitution products (chemistry)
  1244. Adding dash and wedge bonds
  1245. Determining Intermolecular Forces - Ionic Crystals and Network Solids?
  1246. Methane gas and activated carbon
  1247. AP Electrochemistry Free Response Questions
  1248. AFM Bit-Density Calculation
  1249. Structure using Proton NMR Spectrum
  1250. fragment lengths
  1251. Quick question regarding solution concentrations
  1252. Desperately needed help for organic 1
  1253. approximate atomic mass
  1254. Primary and secondary active transport, and passive transport?
  1255. Solubility of zinc hydroxide
  1256. Specific heat capacity
  1257. Specific heat
  1258. Conduction of heat
  1259. Do neutrons flow
  1260. Is H2SO4 a catalyst?
  1261. which stat test should i use?
  1262. Electron delocalisation in conjugated bonds
  1263. Calculation of KCl and KI from Potentiometric Halide Titration with Ag+
  1264. Solubility of Iron (iii) Carbonate
  1265. corrected absorbances
  1266. Chemistry Homework Help
  1267. Saturation of a salt
  1268. Enthalpy of a Neutralization Reaction
  1269. chemistry homework
  1270. Stoichiometry of Precipitation Reactions
  1271. chemistry problem
  1272. Rate Law problem
  1273. super simple molar mass chemistry question
  1274. Stoichiometry
  1275. Newtons Law of Cooling applied to hot Neon and Hydrogen gas
  1276. Statisitics - Assocations
  1277. Heat of reaction in constant pressure calorimeter (Chemistry)
  1278. Electrolysis
  1279. Rate Law Homework Problem
  1280. organic chemistry
  1281. entropy and enthalpy
  1282. Biotech position paper help
  1283. Help!! Probability!
  1284. Heat of Reaction
  1285. Physical Chemistry Q
  1286. stoichiometry ,gas problem
  1287. Phosphoric acid mixture titration
  1288. Calculating Population...
  1289. EDTA Titration problem
  1290. astronomy - speed of debris of supernova inner ring
  1291. Grignard Reaction Stoichiometry
  1292. What type of hybridization occurs in the orbitals of a carbon atom participating in a
  1293. Liver and Kidney Evolution! Please Help!
  1294. energy of shielded Electron in K-shell
  1295. Concentration of Ca 2+ and Mg 2+ from EDTA titration?
  1296. Finding the products to a chemical equation when only given reactants
  1297. Products from etching
  1298. Chemistry Buffer Question
  1299. Chemistry, Equilibrium Constant Question
  1300. Chemistry help !
  1301. allowed transitions
  1302. Organic Chemistry: Sn1/E1/Sn2/E2/Alchol/Ether Transformations
  1303. Half reaction problem?
  1304. Chemistry % ionisation
  1305. Chemistry solubility (Ksp)
  1306. Titration Laboratory Help
  1307. Thermodynamics homework about 1st and 2nd Law
  1308. Phosopholipids in Salty solutions
  1309. Nucleophilicity and basicity relationship
  1310. Enthalpy changes Using Hess' law
  1311. Why there isn't a work term in entropy balance equation?
  1312. chemistry experiment
  1313. Chemistry Help - Partial Pressure in Decomp
  1314. Microbiology: First stage and 2nd stage tests
  1315. Substitution Product
  1316. Organic Chemistry
  1317. chemistry percipitate question
  1318. number of atoms in mol vs gr
  1319. Writing Formulas for Ionic Compounds
  1320. Chemistry solubility and precipitate
  1321. Chemistry Molarity Q
  1322. pH problem, equilibrium.
  1323. Linear Algebra
  1324. Quick gyrochronology question...
  1325. Energy Transition Question
  1326. Spectrophotometry: Iron in Vitamin tablets and Absorbance
  1327. Nuclear Chemistry (determing masses from radioactive decay)
  1328. Cl electron configuration
  1329. Calculating pH and [H3O+] after dilution
  1330. wavelength
  1331. Mutant frequency
  1332. URGENT: chemistry qs: write the equillibrim constant for the reverse reaction
  1333. HELP!!((BIOLOGY)) Cell signaling...induction and constitutive signaling?
  1334. Determination of Caffeine in Moutain Dew
  1335. Chemical reactions according to equation
  1336. Chemistry?
  1337. Chemistry - AAS help
  1338. Calculations of how much water evaporated and what is left
  1339. Finding the final temperature of a final solution. putting ice in soda/water
  1340. C13 NMR Interpretation
  1341. Avogardro's number / Representative particles
  1342. combustion reaction
  1343. Calculating the entropy
  1344. HELP!! How to find a method to determine the molar mass of a soluble acid X??
  1345. Tempreature After Combustion
  1346. Where there is more entropy
  1347. Genetics - Color Blindness Pedigree
  1348. CH3F MO diagram
  1349. Working with dalton's laws
  1350. Particles Per Million
  1351. Ratiation Energy problem
  1352. How is the structure of cell membranes related to its ability to perform its function
  1353. Correction for Stoichiometry
  1354. What are the concentrations of HA and A- at this point in concentration?
  1355. Astronomy -- pressures
  1356. Mass spec fragment loss
  1357. Spectator ions
  1358. Percent Yield
  1359. Need lamen explanation of ionic vs. covalent bonds
  1360. Chemistry, Calorimetry finding delta H
  1361. Chemistry Help!
  1362. Electrochemical Cells, Cell Potentials: Using Nernst Equation
  1363. Intermolecular forces
  1364. Acid, Base, and Buffer Titration Problem
  1365. entropy for adiabatic expansion
  1366. How many types of protons? (^1 H NMR)
  1367. Question about Oxidation-Reduction
  1368. Question about entropy
  1369. strange result in lab possibly electrochem related?
  1370. C-vitamin titration (Equivalence Point!)
  1371. Ideal Gas Pressure?
  1372. How much heat is needed?
  1373. Entropy Change
  1374. Combined Gas Law
  1375. Help. Physical chemistryyy
  1376. Why did copper come before iron?
  1377. Heat transfer question
  1378. Calculate Molarity of Co^2+ in a solution
  1379. Thermodynamics: Freezing Point Depression
  1380. Thermal Decomposition of Hydrates
  1381. mass of aluminum?
  1382. 2 Question about reactions
  1383. Is it possible to burn methanol without O2
  1384. Some help on correlating the reaction mechanism with the rate law
  1385. The Nature of Gases, Heating Gases
  1386. How do you work out the volume and concentration when moles are given?
  1387. Cell reaction
  1388. Standard Reduction Potentials Question
  1389. Question about Base and Acid
  1390. Percent Composition
  1391. Stoichiometry
  1392. Nernst Equation Question
  1393. Equilibrium Constant from Electrode Potentials
  1394. Concentration of Molecules in the Air
  1395. cyclic formation
  1396. michaelis menten ... urgent.
  1397. Homogeneous solution
  1398. do i correct in my pH Calculate ?
  1399. conversions
  1400. Reaction between water and metals
  1401. Percent Yield
  1402. Sn2 Reactions and Solvent characteristics
  1403. What is the chemical formula of cement?
  1404. strong acid and pH
  1405. Question
  1406. Neutralization Equation
  1407. Body-centered-cubic # and types of holes?
  1408. Quick Science Fair Question - Testing Enzyme Reaction Rates
  1409. carboxylic acids
  1410. Precipitation from saturated solution
  1411. two weak acids + strong base
  1412. pH with the formula c=n/v
  1413. Heat of formation, please help ASAP !
  1414. Logic Question
  1415. Urgent urgent
  1416. Gases
  1417. Ap Chemistry: Building (and Breaking) Buffers lab
  1418. Na,K-ATPase as a pump. Request for Reference(s)
  1419. equilibrium constant expression
  1420. basicity order questions
  1421. Solubility of a Fertilizer
  1422. Chem Homework help/Enthalpy
  1423. Question
  1424. CH3NH2 in the Bronsted-Lowry Theory
  1425. abundance of isotopes based on ratios
  1426. Synthesis of proteins in Euk. cells
  1427. AP Chemistry homework! pleaseee help me
  1428. Chemical Kinetics Advanced Problem
  1429. Unsatisfied octets? *confusion*
  1430. themodynamics problem
  1431. Robert Hooke-Microscope
  1432. optical isomerism
  1433. Not understanding definition
  1434. Preparing Reactants and Making Products
  1435. optical isomerism
  1436. Question regarding RNA Translation
  1437. Acidity of oxoacids of P
  1438. materials with activity Optical
  1439. Can someone tell me what these parenthesis mean?
  1440. Intro to Astornomy question
  1441. organic doubt
  1442. Simple O-Chem question
  1443. some questions about neuro stuff...
  1444. Create a lab report
  1445. Concentration of Solutions
  1446. stoichiometry
  1447. Vapor Pressure of Solutions
  1448. Benzylamine (simple!)
  1449. Stability
  1450. Due in two hours, I can't figure it out!!! I spent 45 mins on this
  1451. Atomic bonds in alloys
  1452. Pls can someone help me to solve this question, am practicing for my exams.
  1453. pi bond formation energy of allyl cation
  1454. Heat of solution
  1455. Calculating the entropy
  1456. nomenclature
  1457. stereochemistry
  1458. ortho-phthaladehyde.. do you know?
  1459. Physical Chem Van der Waals eqn of state
  1460. atmosphere, carbon dioxide and water vapour help??
  1461. Gravimetric Analysis with empirical formula
  1462. Atom composition (simple question but hard for me)
  1463. Equilibrium question!
  1464. Chemistry - Lewis Structure question
  1465. superposition and homogeneity - graph analysis
  1466. Dimensional analysis
  1467. Chemistry - Henry's Law/Raoult's Law
  1468. Volume of H2
  1469. Organic Chemistry: Stabillity of Nitrogen Containing Cyclic Compounds
  1470. Difference between a kelvin and a celcius degree
  1471. Common ion effect - calculations.
  1472. Limiting factors
  1473. Portion of Chromosome Copied with Limited dTTP
  1474. N-linked glycosylation
  1475. Electron shell transitions between levels - conceptual question
  1476. Partial Pressure of Air
  1477. Shape of titration curve in vol (NaOH) vs vol (HCl)
  1478. Decrease in Aspirin Melting Point
  1479. Bio HW- Evolution
  1480. Are double bonds/resonance structures more nucleophilic?
  1481. How do you knock off a halogen from a hydrocarbon chain?
  1482. Iupac
  1483. Nomenclature
  1484. Chemical Equilibrium Constant Calculation
  1485. Thermochemistry - work, heat, total energy
  1486. Quick question on single displacements?
  1487. Termochem problem. Work required to heat water
  1488. Electrolysis of aq CuCl2 with Ag electrode
  1489. Grignard Reactions
  1490. Balacncing using redox methodology
  1491. Henderson Hasselbach Eq'n. Tris HCL Buffer
  1492. thermochemistry-heat of reaction
  1493. Rates of Reaction question.
  1494. Thermodynaics Analysis of Processes
  1495. N proportion
  1496. Chemical Reaction
  1497. Concentration of Solutions
  1498. Grunberg-Nissan Equation Proof
  1499. Reaction Rates
  1500. [Chemistry] Trying to find the vapor pressure of water with pv=nRT
  1501. The Electron Configuration of Cd2+
  1502. An elementary experiment
  1503. Nitration
  1504. Isomers
  1505. Sensor Radiance Equations
  1506. Non-Cyclic Phosphorylation of Photosynthesis
  1507. Enzyme Kinetics and Affinity
  1508. ppm, equations, atmosphere/molecules help?!
  1509. equilibrium
  1510. Strong, Weak Acids & Bases
  1511. How to balance chem.eq. with crystal water?
  1512. specific rotation
  1513. How do I calculate Energy?
  1514. finding concentration of Permanganate
  1515. how to determine the specific heat of a given substance (calorimetry)
  1516. Extraction of benzoic acid
  1517. [Chemistry] Vapor pressure of water at temperature
  1518. Chemistry problem, please help!
  1519. Biology Problem
  1520. Please help! ion channels? voltage?
  1521. mass of inerts in a mixture?
  1522. Triprotic Acid
  1523. What is the correct unit this volume equation?
  1524. Density equation problem
  1525. Using small samples of ether is better in an extraction?
  1526. Lowest energy conformation
  1527. is a hydrate affected by a coeffiecient?
  1528. Proton NMR spectral analysis
  1529. what is the field of view for the low power lens..
  1530. Sordaria fimicola being a haploid
  1531. Buffers?
  1532. Henry's Law, Vapor Pressure
  1533. How to find the ph in a strong base weak acid titration?
  1534. enantiomers
  1535. Heat of fusion
  1536. precipitation reactions for sparingly soluble compounds?
  1537. Quick help with NCBI and finding coding region
  1538. Chemical Equilibrium and Probability
  1539. biology experiment
  1540. Chemical Electric CELL with graphite electrodes?
  1541. Problems with Flame Calorimeter
  1542. 1-Bromobutane from 1-Butanol
  1543. i need to know if i correct (Chemistry)
  1544. Identification of Compound:Spectral Analysis
  1545. unit cells
  1546. Chemistry 2
  1547. Electron Configuration for Lanthanides
  1548. how to determine dsp2 or sp3 structure?
  1549. Solubility of alkali earth metals/solvation energy,periodic trends, IMFs
  1550. highschool chemistry question on Le Chatlier's Principle
  1551. Caffeine formula
  1552. Rate Law+Temperature
  1553. Quicklime production
  1554. extremely easy chemistry question
  1555. Molarity
  1556. Lab Preparation Using a solid, DI water, a balance, and a flask
  1557. Logic choices
  1558. Choosing the right answer
  1559. Basis exercise
  1560. Finding the mass
  1561. Equilibrium constant question???
  1562. Le Chatelier's principle
  1563. Molecular Biology (Molecular Chaperone Proteins)
  1564. Apatite
  1565. Biophysics - DNA Polymerase
  1566. Simple calculations with using proper scientific notation and absolute uncertainty
  1567. Caculating normal boiling point using an equation of a line
  1568. Diels Alder Reaction - speed of reaction
  1569. Chemical Engineer Ammonia Problem
  1570. Microbiology Quiz Question (transcription/DNA replication)
  1571. Preparation of a 250 mL .25 molal solution of CaCl2
  1572. Molality and Mole Fraction
  1573. Henry's Law
  1574. Freezing Point Question
  1575. Vapor Pressue of the Solution
  1576. Reaction Rates and Rate Equations
  1577. finding molecuar formula
  1578. chemistry elements
  1579. Sedimentation Coefficient
  1580. Organic chemistry - Properties
  1581. Reversible Adiabatic Expansion for an Ideal Gas
  1582. Hydrocarbones
  1583. Equilibrium Chemistry
  1584. Chemistry: Separating mixtures assesement
  1585. Dinitrogen monoxide decomposition
  1586. 1st Law of Thermo Calculation (Ideal Gas)
  1587. mass of P in Apatite
  1588. Calculating Ksp in Galvanic Cells
  1589. Calculate the surface area of 1 g of TiO2 powder
  1590. Ochem: H20 and HBR
  1591. Easy one (i guess) but i´m strugle..
  1592. Please check my work.. energy required to raise temp by 10deg..thanks
  1593. end to end distance of various copolymers
  1594. Please check my work (ice melting in cup) thanks
  1595. magnesium oxide reaction
  1596. water and salt
  1597. isothermal expansion question...
  1598. Dont understand how p=nRT/V relates to dU = C_VdT
  1599. Chemistry, acid base titration lab
  1600. Physical Chemistry 2 problem
  1601. Soap and oil
  1602. Chemistry: Rates of Reactions
  1603. Supercooled water freezes. Is this a spontaneous process??
  1604. PURE compound has higher melting point than the literature?
  1605. Elimination Reaction
  1606. Methane
  1607. HCl in water
  1608. Heat of vaporization
  1609. Heat of vaporization/final temperature
  1610. Thermochemistry and the formation of pure oxygen
  1611. Chemistry: Catalysts Multiple Choice Question
  1612. Determine the molarity of NaOH used to titrate acetic acid.
  1613. Help with Theoretical Yield
  1614. NaOH in HCl
  1615. Primary, secondary, tertiary alcohols
  1616. Help with mass and molar concentrations
  1617. Reaction Spontaneity
  1618. Zn+HCl
  1619. Is it possible to clone dead people?
  1620. ammonia hydroxide + HCl = pH?
  1621. Ions number
  1622. Changing the pH of a Swimming Pool.
  1623. Micro-transactions [Research Paper Help]
  1624. Fill the gaps
  1625. Lithium hydroxide
  1626. Molarity of Copper Ion solution produced from Copper, Nitric Acid, and Water
  1627. Chemical Equation of Redox Reactions
  1628. Making Salts (calcium chloride)
  1629. Theoretical Yield Help
  1630. Solubility of organic compounds
  1631. Material Performance index
  1632. Ionic equation, question about how the answer is derived here?
  1633. In an ionic equation, how do you know what pairs with what? For example:?
  1634. Simple Galvanic Cell
  1635. When will DNA adopt an A-form helix?
  1636. Simple Tandem Repeat Profiling
  1637. Osmosis Lab
  1638. rate law
  1639. Orgo - Carboxylic acids
  1640. Equilibrium constant
  1641. Chemistry Balancing Redox Reactions
  1642. Boltzmann expression question
  1643. Reason for solubility curves
  1644. bond breakage
  1645. Cell Biology -- Devising Experiments
  1646. Name the following organic molecule (IUPAC)
  1647. Need help deriving a formula
  1648. Unknown specific heat of a mixture of several substances of known specific heat
  1649. Balancing chemical equations
  1650. in molecules, why is there zero point vibrational E but no zero point rotational E?
  1651. Finding the atomic mass of a hypothetical element.
  1652. Thermal resistance problem
  1653. Spectral Lines of Hydrogen
  1654. 2NH3->N2+3H2. Rate=k[NH3]/[H2], what is the mechanism?
  1655. Questions about oxygen level in humans
  1656. Non-spontaneous reaction and Gibbs Free Energy
  1657. Buffer adding common ion effect?
  1658. PH solution
  1659. Reaction, find the k for the overall reaction
  1660. Nuclear Power; energy scenario
  1661. Balancing Neutralization Equations
  1662. C6H5D from Benzene
  1663. Chem question
  1664. Which Nucleophile should I use?
  1665. Astronomy, age of a moon rock, half life
  1666. Astronomy, motions of a plate
  1667. Hess's Law and Ionization Energy
  1668. HCl dissolves
  1669. Reaction of Fructose with Ethanol
  1670. Ideal gas law, concentrations, mole fractions
  1671. Electrostatics/ Statistical Mechanics
  1672. Renal physiology clearance problem
  1673. Predicting missing boiling point in the following series of compounds:
  1674. chiral centres in molecules
  1675. Can anyone define magnetic quantum number?
  1676. Stoichiometry to find the concentration of O2?
  1677. Equilibrium Partial Pressure
  1678. A couple of Homework questions
  1679. Help on homework question
  1680. number of Atomic orbital
  1681. Enthalpy confusion (not a homework problem)
  1682. [Chemistry] Effects of iron (III), and iodine on esters
  1683. Can someone explain why this didn't react with anything?
  1684. Benzylamine
  1685. Help With Soil Questions.........
  1686. The Schwarzschild Solution and how it led to the discovery of Black Holes
  1687. Electrochemistry
  1688. DNA Ligase/Topoisomerase Study
  1689. Mass of water vapor
  1690. Initial Rate of Decomposition
  1691. Net Charge Question
  1692. orbital overlap diagram
  1693. Bond Enthalpy
  1694. Randles-sevcik equation
  1695. Calculating moles
  1696. Resting heart rate
  1697. Born Haber Cycle for SrBr2
  1698. Question about dissolving Ammonium Chloride in Water
  1699. physics/chemistry
  1700. Dissociation constant of weak acid
  1701. Determining volume of an acid needed to react with a mass
  1702. rate of formation of a weathering rind
  1703. Rinsing Errors in Back Titration (Finding Nitrogen in Fertiliser)?
  1704. Phage RNA problem
  1705. HELP! Chemistry Lab!
  1706. Thermodynamics
  1707. lewis structure
  1708. Heat Capacity: Heat lost
  1709. Question on quantitative analysis preparation
  1710. Relationship between mass/gravity/speed
  1711. Advanced ICE Table (chemical equilibria)
  1712. Soil Mechanics Question
  1713. Chemistry 12, equilibrium, entropy
  1714. do you agree that the answer is not an option?
  1715. Non-carbon based lifeforms
  1716. Rate of fermentation
  1717. Energy(heat)
  1718. Chemistry test tommorow balancing word equations
  1719. Henderson-Hasselbalch equation
  1720. FLP Recombinase Problem
  1721. Triple Titration
  1722. Temperature Vs. Enthalpy
  1723. Boltzmann distribution
  1724. Molecular weight of unknown acid through titration
  1725. Physical Chemistry (dissolution of a substance)
  1726. Biology question, size of particles
  1727. Rate Law and Half life
  1728. Henderson-Hasselbalch equation
  1729. Calculate Calorimeter Constant
  1730. How does Changing Salt Bridge Solution affect observed voltages?
  1731. Chemistry Redox Reaction
  1732. Organic Chemistry Reaction of Carbonyl compound
  1733. Lewis structure
  1734. cis and trans isomers of octahedral compound
  1735. Why is Cl a better leaving group than an anhydride?
  1736. (SPECTROSCOPY) chromium(III) absorb light
  1737. Easy ?.. Enthalpy Change. (Chem.)
  1738. Stoichometry word problem
  1739. Strontium nitrate and sulfuric acid equation
  1740. Spectrophotometric Copper Determination calculations
  1741. Heat question... (Chem)
  1742. Enthalpy and equilibrium
  1743. Find how many grams are required to react with a solution
  1744. Simple Chem Questions >.<
  1745. Statistics- Find Critical Value(s); Bell-Shaped Curve
  1746. What's the significance of finding the formula of a Hydrate?
  1747. Formal charge and low energy
  1748. simple question. Please look!
  1749. Stoichometry problem #1
  1750. How would you minimise these gravimetric analysis errors?
  1751. Reaction rate
  1752. Grade 10 Science Unexplained problems
  1753. Charge density
  1754. Chem Definition (Quantized)
  1755. Gibbs Free Energy, How to find G with only Hstand and Gstand
  1756. ThermoChemistry
  1757. Reaction of alpha olefin sulfonate (AoS)
  1758. Standardization of nitrite solution (TITRATION, STUMPED)
  1759. Composite Matrix
  1760. Chem question (orbital)
  1761. AP Chemistry exam question (multi-choice): What should I know?
  1762. Mass of Nuclide Remaining After a Fraction of a Half-Life
  1763. Balancing Redox Reactions using half reactions?
  1764. Thermodynamics of a basaltic dike (dyke)
  1765. Finding ion concentration after determining whether precipitates will form
  1766. Balancing Redox Reactions (another question) help?
  1767. IUPAC method.
  1768. Buffers
  1769. Eukaryotic Ribosome Question
  1770. Chem questions...
  1771. is delta H a state function??(Hess Law?)
  1772. difference between delta H and q?
  1773. Stp
  1774. I need Help Please!!! Chemistry gurus please help!!?
  1775. Radiometric dating question
  1776. Ka, Kb, calculating concentration of F-
  1777. Cyclic compounds - stability?
  1778. Chem 1 thermochemistry problem? Am I doing this right?
  1779. Question about Buffers and H-H
  1780. How can DNA fit into the nucleus?
  1781. Can someone kindly double check my heat and energy problem?
  1782. Adiabatic Expansion of a real gas
  1783. TNT constituents and its explosive nature
  1784. Calculate molar volume of gas
  1785. Chemistry: Finding Ksp for Ca(OH)2
  1786. Chem... Easy question
  1787. Some geology questions
  1788. Ionization energy
  1789. Surface Tension
  1790. Calculating Delta Free Energy
  1791. Vsepr
  1792. To do with qualitative analysis?
  1793. Chemistry wavelength question
  1794. help with finding chirality centres
  1795. Propagating Uncertainties
  1796. turbulent flow velocity profiles
  1797. Presentation Topics
  1798. Where the NO came from?
  1799. Chemistry problem, what to do this to make it correct
  1800. Specific heat ? Need help?
  1801. Can anyone correct my mistake in the chem problem here: An alloy of mass 25.0 grams
  1802. Figuring out Concentration?
  1803. Equilibrium and Equivalence Calculation [Very Difficult]
  1804. Finding Ka of Monoprotic Acid using information from titration
  1805. chemistry problem on temp. / heat transfer stuff
  1806. Does the heat from the alloy transfer to the water in the setup equation
  1807. Lewis structure
  1808. Scattering of solar radiation
  1809. Yield of CuSO4 crystals
  1810. Simple Unit Conversion Question
  1811. Astronomy, Mass of
  1812. Entropy
  1813. probability of molecular states and arrangement
  1814. neuman stability and chiral question
  1815. Balancing redox reaction by half-reaction method
  1816. pH of buffer; no Ka/Kb given
  1817. pressure
  1818. H NMR of unknown sample (organic chem)
  1819. final pressure when two gases at different pressure
  1820. Titration of unknown acid in lab, how to determine molar mass?
  1821. Chemical bonds at room temperature
  1822. Nernst Equation
  1823. Calculating Uncertainty of Aquired Evaporation Rate
  1824. Photo electric effect
  1825. Lewis Structure Exceptions.
  1826. Naming Organic Compounds
  1827. stoichiometry calculations
  1828. Hybridization of Chlorine
  1829. ES potential two parallel plates
  1830. Sophomore Biology
  1831. Preparing solution of NaCl by diluting
  1832. Net ionic equations
  1833. atheroma / thrombus - which one
  1834. Molecular orbital theory of heterodiatomics?
  1835. hardy weinberg problem - involving mortality rate
  1836. endosymbiosis or mutation world problem
  1837. Organic: MacMillan Organocatalyast Mechanism
  1838. Calculating membrane potential (Vm) given resistance and equilibrium potentials
  1839. balanced equation +pressure
  1840. Thermodynamics, Open System Entropy Problem
  1841. Weak Acid - Strong Base titration. Too little information?
  1842. highest boiling point
  1843. Understanding how the genes actually work
  1844. Endothermic Design
  1845. Simple acids and bases question
  1846. Kinetics with Total Gas Pressures
  1847. Covalent bond question
  1848. More chemistry help... God I hate chemistry!
  1849. find the unit cell
  1850. 4 True/False questions about synapses
  1851. Fatty Acid chain length and its effect on binding to serum albumin
  1852. Electroplating using Barium metal
  1853. work against the external pressure
  1854. Pick and choose your traits
  1855. Biology - Respiration
  1856. Mass A -> Moles B
  1857. O-Chem: Alkene Reaction with HBr and Methanol
  1858. impedance
  1859. Neutralization problem
  1860. How can you use a belt transect to record changes in species distribution?
  1861. Mole
  1862. Quantities Calculation
  1863. How can you tell the difference between iron (II) chloride and iron (II) sulfate?
  1864. Is my electronic textbook incorrect?
  1865. Volume annd moles
  1866. Polarity
  1867. Calculate the power of a the lift motor
  1868. Mole Ratio
  1869. Tensile test please help: Materials
  1870. Polymerisation calculation inititiation
  1871. electrochemical cell problem
  1872. In which block does the element belong?
  1873. Chemistry - Change of freezing point
  1874. Electrolytic Cell Problem - Can't calculate req'd voltage
  1875. Inner Sphere vs. Outer Sphere electron transfer
  1876. REDOX Half Reaction and Net Ionic
  1877. Chemistry - Molecular formula
  1878. Lewis acids and bases
  1879. Need some help with a wine redox titration
  1880. Z/T-test should not be used when outliers are present, their removal not justified
  1881. Beer-lambert law and UV absorption spectroscopy.
  1882. gravimetric analysis of phosphorous
  1883. calculating molar density
  1884. Vapour pressure of solution from osmotic pressure
  1885. question on kininogen
  1886. ATP sites based on E0
  1887. Chem: Solubility Product Constant
  1888. Separating ephedrine from phenacetin b/c of nitrogen atoms
  1889. Chemical Formulas from percents/ratios
  1890. weak acids
  1891. Real gas compressibility isotherms(graphs)
  1892. van der Waals equation adjustments
  1893. Carbonyl Group, C=O bond lenght
  1894. Nernst equation
  1895. Chem: Calculate volume given molarity and pH
  1896. Few chemistry tasks that I don't understand at all
  1897. Curious about precipitates
  1898. Car things (Why does lead increase the octane rating)?
  1899. Microeconomics Black Market Question
  1900. Ecell question
  1901. electrochemistry metallurgy mass calculation
  1902. Immunity to viral diseases - Question
  1903. Help finding Maximum Depolarization of the membrane above threshold.
  1904. Mole Concept question
  1905. Yoghurt production in depth
  1906. Control Mass Thermodynamics
  1907. General Chem Kinetics question.
  1908. In regards to making methane (CH4)
  1909. Calculation of the dipole polarizability of the hydrogen atom
  1910. Ratio of valencies?
  1911. Chemical Equilibrium and Concentration
  1912. problem with sodium chlorate cell
  1913. Biology Sec 4 Qns
  1914. Solving for equilibrium constant...
  1915. Physics in the Weather???
  1916. solubility of p-nitrophenol
  1917. Extracting Copper II Sulphate
  1918. How much Silver Nitrate to produce a precipitate?
  1919. Genetics- mono and dihybrid crosses
  1920. Dimensional analysis. Conversion factor confusion
  1921. Concentration and pH Caculation of Titrations
  1922. Transportation in plants-Xylem
  1923. Where are Radioactive Isotopes found?
  1924. Equilibrium problem, anyone?
  1925. Orbital Blocks and Energy Levels
  1926. Nitrate and pH in a Fishlessly-cycled Aquarium
  1927. Acid-base equilibrium question titration
  1928. Electrochemistry help, Need steps
  1929. Speed of Reaction Application Question
  1930. pH and POH question
  1931. Lewis dot diagram configuration
  1932. Is covalent bonding only between non metals?
  1933. Chemistry: Naming compounds. Need someone to double check my work please.
  1934. Why do Manganate(VII) ions need scidic conditions?
  1935. Collision rate termination reaction hydrogen oxygen explosion/combustion
  1936. Oxygen pressure
  1937. Titration curve
  1938. [Intro Chemisty] Positive and negative charges.
  1939. Organic Chemistry Petroleum Fractions
  1940. Finding annual rate of return
  1941. Scientific Method and Spontaenous Generation (Microbiolog)
  1942. NMR analysis help? Lab tomorrow :/
  1943. Electron Affinity Questions
  1944. Stoichiometry problem
  1945. Synthesis of an organic compound
  1946. Find the final temp (Physical chemistry)
  1947. Archimedes Principle to determine height of continental crust
  1948. Can electronegativity be the same for 2 elements?
  1949. Stoichiometry problems thread
  1950. Finding number of C=C bonds
  1951. Summarizing arguments and evaluate them!
  1952. Carbon Dioxide as an ideal gas
  1953. photo reactive dye,
  1954. I need help solving this problem, I have started but I don't know if I got it right
  1955. Natural Selection and David Lack's starling studies
  1956. Stoichiometry - 0.7g of Na2CO3.xH2O were dissolved in water...
  1957. Need to find the equivalence point volume from the first derivative graph?
  1958. Need to find best guide for 1st semester O chem reaction mechanisms
  1959. Organic Chem - Oxidation and Reductions
  1960. Questions about % difference, inherent error, and % relative average difference.
  1961. standardization
  1962. Haber process
  1963. Henderson Hasselbalch equation question
  1964. Vant Hoff factor problem. General chem 2
  1965. Osmotic Pressure/ Gen chem 2
  1966. Finding Boiling point
  1967. Mutiple Valences, Ionic compounds and Transition metals.
  1968. Where can i find a list of multiple valences?
  1969. Finding coefficient of thermal expansion and isothermal compressibility
  1970. Cell Division
  1971. chem help pleaseeee : How many Fe atoms and how many moles of Fe atoms are in 400.0 g
  1972. Help calculating uncertainty of slope & intercept of cal. curves. uncertainty ?s
  1973. Explanation for empirical horopter: density of photoreceptors in hemiretinas
  1974. n-butyl alcohol and bromide reaction
  1975. Grade 11 Biology EEI (similarities and differences)
  1976. Partial pressures and PV = nRT
  1977. Volume affects temperature change? No. of hydrogen ions?
  1978. Chemistry - Concentration of Ions
  1979. Chemistry - Ions and subatomic particles
  1980. Chemistry - Why does Bromine-80 not occur in nature?
  1981. Scientific Notation's Got Me Blown!
  1982. Calculating enthalpy of formation
  1983. Finding Wavelength using Energy
  1984. ElectroChemistry PH Question
  1985. Basic chem. atoms and their electrons.
  1986. Chemistry, cations and anions
  1987. How do i determine which valence is being used (balancing equations)
  1988. Change in ascorbic acid over time
  1989. Find the amount of Barium Sulphate precipitated
  1990. Find frequency
  1991. Atomic structure question
  1992. What is the size difference between Hydrogen and Oxygen
  1993. Find wavelength
  1994. Finding velocity
  1995. Questions about magnetic force between different strength magnets
  1996. Grignard reaction product involving a ketone
  1997. Finding the wavelength
  1998. Carbon dioxide partial pressure
  1999. Determine volume of HCl added to propionic acid to get pH=1
  2000. Check my homework, acids/bases balancing equations
  2001. Spinal Chord Neurons MCQ
  2002. Water Chemistry Cation Determination
  2003. Finding atomic weight from vapor density of metal chloride
  2004. General Chemistry-HELP
  2005. Chem: Ksp & deltaG for Ag2CO3 at 20C and 100C
  2006. Basic Spectroscopy Question
  2007. Hemodynamic help please!
  2008. S-N diagrams
  2009. Ionization Energy / Electron Affinity Systems
  2010. electron interactions in a Helium ion
  2011. Multiple valences
  2012. Bond Order / Lewis Structure
  2013. Verifying Malus' Law
  2014. Amount of CaO required to removed HCO3- from 1 kg of hard water
  2015. organic chemistry question (histidine reaction)
  2016. molecular formula of combustion?
  2017. How to verify your claim in this fire experiement?
  2018. Electroplating Question
  2019. Lowering Solubility
  2020. Lowering Solubility with OH
  2021. Difficult conversion
  2022. Why acetaldehyde has a higher boiling point than ethylamine?
  2023. Chemical formula of diesel
  2024. Greenhouse Effect
  2025. General Chemistry Lab, need some help
  2026. Reaction Mechanism Predictions
  2027. Amphoteric Acids and Bases
  2028. Ideal gas unit conversions
  2029. Help on Ideal Gas Law
  2030. calculation pH from concentration
  2031. Finding mEq/L of Ba
  2032. Looking for dimensional analysis problems/solutions!
  2033. Finding the # of molecules.
  2034. Can someone explain? (Celcius to Kelvin question)
  2035. Calculating temperature change when dissolving Urea
  2036. Check my homework (moles/stoichiometry)
  2037. scavengers vs. decomposers
  2038. Calculate "a" values given equation of state for gases
  2039. Showing equation of state is inaccurate based on compression factor
  2040. Question about animals' change of number of legs when they grow
  2041. Kp of NH4Cl reaction
  2042. 0.2% of 50ml/ml preperation
  2043. Hydrophobicity and colorimetry
  2044. Calculating rate law equation by determining initial rate of oxygen produced
  2045. How do i balance this chem equation?/can i use decimals & fractions?
  2046. Electricity economics
  2047. Which compounds are more basic than water?
  2048. Molarity Calculation
  2049. pH to ppm with ammonia chart/problem
  2050. Basic Dimensional Analysis Question
  2051. Heterogeneous/homogeneous chemistry homework problem?
  2052. This online chemistry lab won't accept my answer, WHY?!?!?
  2053. Finding the equivalent of a compound
  2054. Neutralizing a basic reaction with HCl
  2055. Simple pH Question
  2056. Energy level diagram
  2057. P.Chem1: Internal energy in isothermal, reversible reactions
  2058. Hexagonal Packing Factor - Functional Molecules
  2059. How to stabilize pH of the solution that containes silica????
  2060. RNA polymerase
  2061. Alternative Real Gas Equation of State
  2062. alcohol dehydrogenase
  2063. Protein in Plasma Membrane
  2064. melting point of aluminium oxide and magnesium oxide
  2065. Partial bond polarization in Nitromethane.
  2066. Coordination number
  2067. What to make of this graph?
  2068. Henderson-Hasselbalch & phosphate buffers
  2069. High school relative atom mass
  2070. Correct definition of Relative atomic mass
  2071. Carbon Monoxide: four resonance structures?
  2072. Finding Molecular formula
  2073. Acids and Bases - Organic Chemistry
  2074. beginner pchem help needed
  2075. rate of reaction
  2076. Problem 13-10E (Intro to Thermo 7E)
  2077. Basic Geology: Magnetic Stripes and their relationship from ridge crests.
  2078. Partition Coefficient
  2079. Geology Subduction Zones question based of picture
  2080. one mole of Lead contains how many atoms
  2081. Basic Chemistry problem and I need help please!
  2082. Hydrogeology - setting up ODE for tank problem
  2083. How to determine which elements may be accomodated in an interstitial site
  2084. Where does the lithosphere of the Atlantic Ocean form?
  2085. Find True Boiling Point with Barometric Pressure
  2086. Problems with probably very simple logic question
  2087. Environmental / chemical engineering problem
  2088. Change in Volume in ethanol
  2089. Calculating 100ml with a mole vs mole ratio
  2090. How to find parents' genotypes from progeny phenotype frequencies?
  2091. Physical Chemistry Questions - NEED HELP!
  2092. what am I doing wrong? chemistry problem
  2093. changes in Extracellular Fluid(ECF) osmolarity and volume
  2094. 1 methyl ethyne reacted with i(HBr,) ii(Mg(0), THF, acetone)
  2095. Questions about polymers and their properties
  2096. How do I do this glucose dilution problem?
  2097. How to start Electronic Structure of Atoms lab?
  2098. Question about sig figs in buffer problem
  2099. Are the phosphate groups of ATP protonated at pH = 7?
  2100. % H2O of hydration unknown?
  2101. g? of KClO3 to produce 50g of O2
  2102. Biochemistry: pH of L-glutamic acid
  2103. Percent Error Formula
  2104. Another buffer problem
  2105. pKa of 2-nitrophenol vs 3-nitrophenol
  2106. naming the following benzene structure
  2107. Lipid and protein
  2108. Need help using Ideal Gas Law
  2109. Similar Ideal Gas Law question
  2110. A compound differs from an element in that a compound
  2111. environmental engineering, plug flow reactor
  2112. Water + Water Vapor - Can I use ideal gas law?
  2113. Calculate the heat capacity at constant volume and constant pressure.
  2114. Salicylic Acid from Methyl Salicylate
  2115. Simplification of Logic
  2116. Solubility of Cations/precipitation question
  2117. Intermolecular bonding
  2118. number of particles
  2119. ionization energy....?
  2120. structural isomers
  2121. Entropy/enthalpy/gibbs for vaporization of water
  2122. Enthalpy Questions
  2123. Hot metal added to Water, Heat Capacity Problem
  2124. AP Chem Find Empirical Formula
  2125. astronomy question- where to begin?
  2126. Opacity and Spectral Features
  2127. Molar extinction coefficent calculation
  2128. Winkler Titration Method
  2129. Balancing equations
  2130. TLC Analysis of a Synthesis Reaction
  2131. Better way of calculating moles
  2132. How to Plot a Standard Addition Curve.
  2133. A couple questions about the bradford method
  2134. Do f-orbitals form sigma bonds?
  2135. Questions about emission spectra and Rhydberg equation for H-atom
  2136. Secular Determinant of non-Linear, Non-cyclic, branched polyenes
  2137. How is recycled plastic disinfected?
  2138. Deriving Rydberg's equation
  2139. Percentage Composition of Mixture
  2140. Using Ksp to find the concentration
  2141. Reversible vs. Irreversible change (gases)
  2142. calculating concentration in molLl^-1 of a solution
  2143. Approximately 12 million kilograms of phosphoric acid (H3PO4) are produced annually..
  2144. Mole concept !
  2145. Analytical Chemistry
  2146. how much water to raise ph of diet coke to 5.5
  2147. heat,work, thermal efficiency problems
  2148. Barium Chromate chemical equilibria
  2149. Precipitate mass question!
  2150. Earth Science: Average Rate of Sediment Deposition
  2151. Quick help needed, How electronegativity is related to polarising power?
  2152. Help with Science Research: Politics and Bias in the Media
  2153. Predicting mRNA sequence
  2154. Using entropy to solve for Free Gibbs energy
  2155. Calculation of enthalpy and internal energy or air in chemical equilibrium
  2156. How many moles of XYZ
  2157. electrolysis in ionic substances
  2158. Test for Reducing Agents
  2159. Writing chemical equations for TLC analysis?
  2160. Microbots Vs Macrobots
  2161. Net Ionic Equation Help
  2162. Heisenberg's uncertainty principle, find uncertainty in position
  2163. Oxymercuration demercuration reaction help.
  2164. HEW rxn: Why do stabilized ylides give E alkenes and unstabilized gives Z alkenes?
  2165. Chemistry - Quinizarin + NaOH
  2166. How many isomers?
  2167. Chemistry: molecules in space
  2168. Stellar Astronomy - Measuring surface temp of the Sun
  2169. Magnesium oxide
  2170. 1,3-Butene or Butene
  2171. Comparing mass ratios and 'proving the law of multiple proportions holds true'
  2172. Reaction Products
  2173. Filling Flat Tire - Adiabatic Reversible Process
  2174. manipulating the centered difference approximation
  2175. Finding Ka using a Galvanic cell and Electric Potential
  2176. Lab question
  2177. Brass and Corrosion!
  2178. 2-methyl, 3-phenylbutane structure?
  2179. Sequence Alignment and Dynamic Programming
  2180. Introductory Solution Stoichiometry: Acids/Bases
  2181. Plausibility of a Formamide ion (of sorts) vs. Formaldehyde oximate ion
  2182. How to predict which elements will have a certain oxidation state?
  2183. NYC Chemistry Regents Electron Configuration
  2184. How does (AlK(SO4)2•12H2O) balance?
  2185. Law of Multiple Proportions
  2186. Calculating Corrosion Rate
  2187. Nuclear Reaction Problem!
  2188. Chemistry colution prep question (quick)
  2189. Converting from Grams to moles
  2190. 3-methylheptane draw the structure
  2191. Microeconomics help!(4-11)
  2192. Prove that Entropy is Extensive...
  2193. Need guidance: Energy/gass question
  2194. Recrystallization in the case of two solvents
  2195. Titration concentration calculation problem, NaOH and HCl/HOAc mixture, help please
  2196. Thermo: Compressor--flowing system analysis
  2197. Pairing Energy/LFSE (Inorganic)
  2198. Finding mole percent
  2199. Microeconomics help!(1-9)
  2200. Microeconomics help!(2-9)
  2201. Microeconomics help!(3-9)
  2202. Microeconomics help!(5-9)
  2203. Why is the use of tert-butyl methyl ether favoured over using diethyl ether?
  2204. Cranial nerves
  2205. Cloud movement, finding temperature, velocity and height from this formula
  2206. Organic Chemistry-Empirical formula problems
  2207. Citing Fusion Efficiency
  2208. Organic Chemistry Williamson Synthesis of an Ether
  2209. Endothermic or Exothermic
  2210. crystallization
  2211. Kinetics Assignment - Reaction Orders
  2212. Material science: Different properties of allotropic phosphorus
  2213. Solution Stoichiometry problem
  2214. Nomenclature, molecular mass, moles help (attempted problems already)
  2215. chemistry
  2216. Drop ice in water, what is the final temperature of the water?
  2217. Oxidized and Reduced reaction species
  2218. Basic Chemistry
  2219. Psychology in Physics?
  2220. How to tell if a species is a Bronsted acid, base, or both
  2221. Organic: Alkyne to Alkene
  2222. Chemistry: Molecular vs. Atomic Iodine
  2223. Calculate the moles of oxygen gas..
  2224. molar heat of neautralization
  2225. molecular formula of S in benzene
  2226. Organic: lanosterol Biosynthetic Cyclization
  2227. vital capacity questions
  2228. Manners of Dissolving Substances
  2229. Reactions in Solution, But Not In Solid Form?
  2230. Chemistry: Determining Solubility of Vitamins
  2231. Is a beaker has 100 ml of water at 20 degrees and another one has 400ml of water at 4
  2232. Compare the structure of RNA and DNA with respect to the following characteristics.
  2233. H-H equation question
  2234. Coffee Calorimetry Problem
  2235. Heat of Formation and Heat of Reaction Difference
  2236. Biology-Chain and Ring Forms
  2237. Balancing a redox reaction
  2238. the maximum heat leak (in watts) into the box that can be tolerated if the motor runs
  2239. why is entropy not conserved in 1st law of thermodynamics?
  2240. Why is LiBr ionic?
  2241. Grade 11 Stoichiometry question
  2242. Chemistry Gas Laws
  2243. Change in heat of a rxn
  2244. Inorganic Chemistry question about d0 complexes
  2245. how to find an unknown amount (titration)
  2246. Calculated Mass
  2247. What is chemical density?
  2248. Lewis and dot structure of (NH4)2SO3, Al2(SO4)3 and Fe(ClO4)3
  2249. Rate of reaction
  2250. False Priming sites (Biology)
  2251. Balancing redox equations using 1/2 reaction method
  2252. Chemistry Equilibrium with Kp
  2253. What is the binding energy in NaCl?
  2254. Question regarding energy from chemicals (M.C.Q)
  2255. Relationship between Electroplating and Kinetic Theory
  2256. Electron Configuration
  2257. lowest energy term symbol for nitrogen
  2258. Krebs Cycle
  2259. redox reactions
  2260. what is a"duplicate sample" when preforming a photometric protien assay
  2261. redox reaction
  2262. Calculating lattice enthalpy of FeF2
  2263. reversible expansion
  2264. Chemistry: Proper Use of a Pipette
  2265. Phys. Chem. (Chemical Equilibria)
  2266. Help with Kinetics-double reciprocal plot
  2267. Liquids and surface tension
  2268. Hyperventilation
  2269. titration of thiosulphate with KIO3, molarity? PLEASE HELP
  2270. How is this correct? (Organic; Stereochemistry)
  2271. Physical Properties of Water
  2272. Would the precipitate be Copper II Chloride in this chemical equation?
  2273. Using Hess' Law calculate the molar enthalpy of reaction for the combustion of ethene
  2274. Chemistry: "Road map" question.
  2275. How would I relate the molecular mass of ethanol (46.07 g/mol) to its formula (C2H6O)
  2276. Daily output of NO from power plant.
  2277. Simple conversion...but did I do it right?
  2278. Adiabatic expansion at constant pressure.
  2279. Photoelectric Effect, identify metal given wavelength light and electric potential
  2280. average number of air molecules.
  2281. Materials Science- Critical Stress with a Surface Crack in Brittle Material
  2282. Calculate CO bond length from J=0 to J=1 transition
  2283. ORGANIC Chemistry: Nucleophilic Substitution
  2284. Chemistry pH question
  2285. Acidic Hydrogen in Aspartame
  2286. Gas stoichiometry questions
  2287. hard soft acid base theory, i'm not understanding it
  2288. Astronomy Time Dilation
  2289. Electron Orbital Question
  2290. Lewis structure for ClNO2
  2291. Calculating q,w,H and U
  2292. Calculating q,w,H and U [Practical Setting]
  2293. Kinetic Theory- Calculating Kinetic Energy
  2294. Calculating Heat Energy
  2295. Help with research material on quasicrystals
  2296. Enthalpy of Formation of Ethyl Acetate
  2297. Finding volume using Molarity + Equation
  2298. polyester
  2299. Unknown solutions!
  2300. Chemistry Purity Problems with solutions help
  2301. Best Organic Chemistry Book?
  2302. Amine Salt derivative
  2303. Grams of gasoline needed to raise level of CO in air.
  2304. Calculating ξ° value for a galvanic cell
  2305. maximum work
  2306. Back titrations PLEASE HELP!
  2307. Macaulays Method Beam Question
  2308. Find the ΔE of the combustion of octane in a bomb calorimeter
  2309. What are some experimental errors associated with spectrophotommetry?
  2310. How do prokaryotes use cellulose as energy source?
  2311. How to calculate species abundance and diversity
  2312. Heat of rxn per mol H2O formed in acid-base reaction
  2313. spectrophotometry and Beer-Lamberts Law
  2314. Casein in water solution
  2315. Rates of Effusion
  2316. Hess's Law Calculations (Enthalpy)
  2317. Which of these is more polar?
  2318. Gravimetric Analysis
  2319. Biology: Genetics: Hardy-weinberg + restriction enzyme
  2320. Specific Heat Capacity Question Mixture Q=MCdeltaT
  2321. Another specific heat question
  2322. Finding the pressure required when given number of molecules.
  2323. ppm of iron from mL ?
  2324. fermentation
  2325. finding amount of iron from absorbance
  2326. Borne Haber Cycle/ Lattice Enthalpy for KBr
  2327. Chemistry: Mass to Mass Problem
  2328. physical chemistry: hybrid orbital
  2329. specific rotation and its uncertainity.
  2330. Distribution Diagram for speciation of Cr(VI)
  2331. Three Ions of Oxygen
  2332. Why is it that we can say: MITOSIS = CELLULAR IMMORTALITY?
  2333. Finding Standard Gibbs Free energy for half cell reaction.
  2334. Prove non adiabatic reversible expansion and ΔS
  2335. Reaction confusion with a lab we did last week.
  2336. Nickel in Coffee Cup Calorimeter (Small Error)
  2337. Question about Q=mcΔT when doing calorimetry
  2338. State of Na3N
  2339. Relationship between moles of O2 and Ch2 Units in a combustion reaction
  2340. Physical Chemistry: Estimating ΔG of an Ideal Gas
  2341. How to create a Lineweaver Burk plot?
  2342. Titration lab with potassium permanganate
  2343. Calculation of Titration problems - Should be Easy?
  2344. Regression Analysis
  2345. How do I draw a line that is 50 deg west or 15 deg east etc
  2346. Complicating factors in trying to calculate the temperature of 0 K experimentally
  2347. Balancing Copper Reaction & Finding Products
  2348. Ideal gas law problem
  2349. Cyclic Voltammetry
  2350. Help! BIF Calculation thickness of annual layer of ore
  2351. quick citric acid question
  2352. Calculate entropy difference
  2353. Cooling bath temperature question
  2354. Oxidation/reduction agents
  2355. Volumetric Analysis Lab Calculation Question
  2356. enzyme kinetics
  2357. Detection of Amino Acids and Nucleotide bases
  2358. Basicity of Halogen Ions - Point Out My Error
  2359. Ksp Calculation
  2360. Chemistry 2 dilution problem
  2361. Elastic deformation problem
  2362. Synthesis of 3-methyl-3-pentanol
  2363. electrode potential ?
  2364. Converting ppm to mg/L
  2365. Enzyme kinetics...plotting a slope replot
  2366. Can someone check my Fischer Projections?
  2367. Solution of NaCl and CO2. Name species and find concentrations of species.
  2368. Dalton's law of partial pressures equivalent to volume ratio?
  2369. Titration of Zinc with EDTA
  2370. How do I know which proton is more acidic?
  2371. crossing over
  2372. P.Chem: Rate of chemical reactions; Half-life
  2373. Potential Energy Surface
  2374. Coulomb Integral for Diatomic Hydrogen Ion
  2375. Amphoteric Compounds
  2376. Method to remove salt from water (Not distillation or RO)
  2377. Electrolysis of water
  2378. Determing the change of entropy
  2379. mole concept
  2380. Genetics
  2381. How do you find the enthalphy change per mole of magnesium?
  2382. Calculating the probability of finding an electron
  2383. Rate of reaction
  2384. Standard Gibbs of a reaction
  2385. Buffers
  2386. Epoxide reacting with Tosylic Acid and Water
  2387. Size of product given size of reactant?
  2388. ion exchange resins
  2389. Formation of a cis alkane from a trans alkene
  2390. Calculation of entropy change for melting ice
  2391. Practical Organic Chemistry - Confirm positive test
  2392. Why does the optic nerve function when a person suffers from AIDP?
  2393. Methane Combustion and Chemical Equilibrium
  2394. What are the differences between C3 and C4 plants?
  2395. physical chemisty
  2396. Neurophysiology homework question- sensory rewiring
  2397. Another buffer!
  2398. experiment for the effect of rennin in milk ?
  2399. calorimetry calibration
  2400. Need guidance with Chemistry - energy related
  2401. my brother's assignment
  2402. Organic Chemistry Synthesis/Mechanism
  2403. Quick rotational spectroscopy question(only need ideas/suggestions)
  2404. Maximum Percent Recovery
  2405. Nerve impulses
  2406. Partial Pressures
  2407. Eadie Scatchard Plot
  2408. Electronic Configuration of Fe+
  2409. pH and buffers
  2410. Need help on calculation in potentiometric halide titration
  2411. Question about Atmospheric pressure
  2412. complete equation, then balance
  2413. Chromotrography
  2414. Ketosis/Ketoacidosis Reaction Mechanism?
  2415. Is osmosis dependant on the length of diffusion pathway
  2416. Find isotope from gamma ray energy?
  2417. Atmospheric Layer with the most air particles?
  2418. The big freeze
  2419. Thermo Concept Questions
  2420. Raman spectroscopy help (simple)
  2421. Is the rate of photolysis in photosynthesis affected by temperature?
  2422. show that the atmosphere is neutrally stable
  2423. Henry's law: mole fractions
  2424. Proof gas loses 1/273 of its volume - Charle's Law
  2425. Thermochemistry- Finding Delta G
  2426. calculation of PH,(using Henderson Hasselbalch equation)
  2427. Finding the concentration in a solution
  2428. Determining the potential in a cell that is not at equilibrium concentrations.
  2429. Specific Rotation of Chiral Molecules
  2430. Calculating the partial pressure of pure Zinc over a solution? over
  2431. Enzyme Kinetics please help
  2432. difference between molecular mass and molar mass
  2433. concentration for reactants: KMnO4+Sugar+NaOH
  2434. Find number of moles of HCl to change pH of Histidine buffer.
  2435. reaction between Fe(NO3)3 and KSCN
  2436. Biology: Genetics: Inherited disease
  2437. Determing triple point temperature
  2438. Calculating moles with volume
  2439. What is my petri dish growing?
  2440. Two Equilibrium problems; please correct my work!
  2441. Electrochemistry Question: Calculation
  2442. chemical kinetics - reaction rate
  2443. Colligative Properties, Freezing Point Depression -- Chemistry Lab
  2444. Which of these molecules will form a micelle?
  2445. Chemistry Calorimetry Question Find Final Temp.
  2446. work, reversible expansion
  2447. final pressure
  2448. sphere
  2449. initial pressure
  2450. Molecular Weight
  2451. pressure in cooker
  2452. Color change Chemical reaction help
  2453. Help with interpreting NMR and IR spectrums
  2454. what is the difference between neoteny and post development?
  2455. Thermodynamic equilibrium constants calculating the reaction free energy
  2456. Molar Ratio Problem
  2457. Find grams of product using a balanced chemical equation
  2458. Neurophysiology homework question- nervous system of a fictional sea creature.
  2459. How is chelation related to equilibriums?
  2460. Percent weight and particle size
  2461. Electrochemical Cell
  2462. Arrange in order of bond strength
  2463. Finding Kp given the final equilibrium pressure
  2464. Determine ΔS when mixing
  2465. Determining pH of Salts
  2466. Indicators of Salts
  2467. Equilibrium constants help! Enough work for 8 marks?
  2468. Finding ΔHvap of water from graph of ln (p of H2O in atm) versus 1/T
  2469. Estimate the average values of ΔH and ΔS in this temperature range
  2470. OF2 + H2O -> O2 + 2HF... What's being oxidized and what's being reduced?
  2471. Chemical Kinetics, finding rate of reaction
  2472. What is the correction use to determine marine gravity anomaly
  2473. Impact of Bond length on Reduction of coordination complex
  2474. Describe chemical compounds as CHARGED, POLAR or NONPOLAR
  2475. Proving a triple point (Thermodynamics)
  2476. Increasing pressure does what to temperature?
  2477. first order & second orser
  2478. Zinc reacting with oxygen - IS THIS RELATION CORRECT?
  2479. How should I analyze results from electrophoresis?
  2480. Chemical Equation
  2481. Determing an element
  2482. Hydrogen Bonds and Water
  2483. Determining the copper oxide used
  2484. What is Maxwell's Principle (Thermodynamics)?
  2485. chemistry - measuring the ammount of oxygen i need to to make MgO
  2486. Possion Process
  2487. Calculating pH
  2488. solubility of several substances
  2489. composition of fuel, AFR , & of air
  2490. Need Help With Identifying My Precipitate, Please Help.
  2491. Entropy change
  2492. Is this possible to solve with Half Reaction method?
  2493. Volatility of aldehydes and ketones
  2494. Phospholipids in cell membrane
  2495. removing an electron out of the ground state
  2496. Calculate the molar enthalpies of reaction occuring in parts A and B
  2497. AQA Unit 4 - June 2010
  2498. Acid-base questions
  2499. Neuroscience Help Please
  2500. Diameter of tungsten wire
  2501. What is atomic orbital representation?
  2502. Pyramids of Biomass
  2503. Copper Solubility in Water with pH 5
  2504. Help please. I dont understand
  2505. VSEPR Model Question
  2506. Basic chemistry: sulphur dioxide shape??!
  2507. reciprocal lattice
  2508. IR Spectrum question
  2509. Energy of the atomic orbitals!
  2510. Interaction between orbitals
  2511. how do i determine optimal temperature and optimal PH level?
  2512. Water/Temperature Question
  2513. Sugar/Metabolism/Weight
  2514. Enthalpy change of reaction
  2515. How do you calculate kpa/min??
  2516. Principles of economics(Mankiw) question on equity & inflation/unemployment relation
  2517. Partial pressure and moles problem?
  2518. Organic Chemistry Nomenclature
  2519. need help with supply and demand equation
  2520. Thermochemistry, heat calculation.
  2521. NMR Splitting Butane
  2522. Question on electron orbitals?
  2523. General Chemistry problem with conversion factors
  2524. Chemical Equations
  2525. Gas Laws Review Help?
  2526. Activity of Mg in Solution
  2527. Oxidising and Reducing strengths within a group
  2528. Question regarding Michaelis-menten plot and equation
  2529. Organic Chemistry help !
  2530. Into to Ideal Gas Law Problem
  2531. Calculating pH of the 1,96 % H3PO4 solution
  2532. Ideal Gas Law Problem
  2533. Atomic mass units(old and new)
  2534. Calculate capacity and selectivity factors
  2535. Regular chemistry electron configuration help!
  2536. Preparing an extraction buffer with PMSF and 2-mercaptoethanol
  2537. Flame test identification- metals?
  2538. Genetics- how many of each genotype?
  2539. Organic Chemistry - Carbanion Question hybridization/valence/geometry
  2540. Solution Stoichiometry Question????
  2541. Carbon dioxide from an antacid tablet
  2542. Redox Titrations Bleach! help!!
  2543. 7% glacial acetic acid in 40% (v/v) methanol
  2544. The Orbital of Nitrogen atom in Ammonia
  2545. Yield Problem
  2546. Lanthanide complexes
  2547. wurtz reaction
  2548. Help with equilibrium (grade 12)
  2549. Interfering ions in a half cell
  2550. Why is this showing resonance?
  2551. Chemistry Question Solution Stochiometry And Determining The Concentration?
  2552. Molal concentraion. Gen Chem 2
  2553. % yield ester
  2554. General Chemistry : Density
  2555. E2 reaction on dihalides
  2556. Air Traped In A Capillary Tube
  2557. Calculating moles
  2558. Coagulation of Proteins -- please help
  2559. A few questions on various topics
  2560. Weight Percent Concentration
  2561. Do Hess's Law equations have to be balanced
  2562. gravimetric stoichiomerty..... eh? HELP
  2563. gas stoichiometry no clue
  2564. Notation in MM kinetics.
  2565. astronomy home black holes
  2566. question on Solar mass stars
  2567. Action potentials
  2568. Gravimetric Analysis to calculate wgt%?
  2569. Is a pipette more accurate than a buret?
  2570. electrochemistry, emf vs HCL concentration
  2571. Calculate the volume of each reagent required to prepare 25.0 mL of each solution
  2572. Calculating Molal Boiling point elevation constant!! HELP!
  2573. Calculating concentration of product & mass of a precipitate
  2574. Calculation of Mass
  2575. Balancing equation of potassium dichromate
  2576. Computer Science Simple Animations
  2577. Missing elements of Grignard reagent reactions
  2578. centers of adjacent atoms for the BCC crystal structure along the [110] direction.
  2579. Graph to find solutions
  2580. Mass spectrometry data analysis
  2581. miller index planes and directions relationship
  2582. Finding Mass through Stoichiometry of Ethanol in a chemical equation
  2583. Electrochemistry - Cell Potential
  2584. C2H3O2- concentration given pH of 30mL NaC2H3O2 solution
  2585. Convert DFA to Regular Expression (Explanation)
  2586. stuck with a problem in electrochemistry
  2587. Chemical Formula Equations
  2588. Exact formula of tetra-amine-zinc complex
  2589. Assigning peaks in a Raman spectrum/ group theory
  2590. Government bonds and YTM
  2591. Bond angle comparison in sp2 hybridised carbon atoms
  2592. Effect of Temperature on Solubility
  2593. Material Science- x-ray diffraction and metal densities
  2594. Homeostasis
  2595. RedOxformula
  2596. Genetics Assignment
  2597. Stuck on a thermodynamics question (1st law)
  2598. arhenius equation solving for K1/T2
  2599. PET depolymerization
  2600. Equilibrium constant of pressure from gibbs reaction energy
  2601. Determing Boiling Point elevations in lab
  2602. Exercise in propagating uncertainty in a simple calculation.
  2603. How does solid copper in an acqueous solution of silver nitrate apply to daily life?
  2604. Raoult's Law, Finding an unknown compound
  2605. Determine the rate of reaction with respect to I-
  2606. Line angle
  2607. variance
  2608. Hamiltonian for an electric system.
  2609. Hypothetical atom + Rydberg equation
  2610. the influence of the type of chemical bonds in some physical parameters
  2611. Chemistry Problem involving specific heat capacity and energy change
  2612. How to calculate Cv
  2613. Electron Geometry and Molecular Geometry
  2614. Lattice Energy
  2615. Stoichiometry
  2616. Classify each solid as a covalent, ionic, metallic, or molecular solid.
  2617. Predicing Reaction help
  2618. IR frequency question.
  2619. Mitosis
  2620. Can you please check my answers to those short astronomy questions?
  2621. Need help with solutions and pH
  2622. Can't figure this radioactive thing out
  2623. Resonance and Aromaticity
  2624. spectrophotometry of chromium salt
  2625. Simple questions on solutions concentration and pH
  2626. Profit maximizing supply
  2627. Need help with simple question on a lab.
  2628. Form about electricity production methods
  2629. Stoichiometry
  2630. Rate Laws - Pseudo-Order
  2631. Finding pH of solutions with an acid and base
  2632. Finding the pH of a buffer solution when a strong acid is added
  2633. Calculate the mass of ice cube
  2634. Gradual temperature drop when freezing
  2635. Partial Pressure from Kp
  2636. Reflection loss and refractive index
  2637. Need help with science experiment calculations