Chemistry Questions and Answers

  • Need help with this chem problem?
  • Need help with this chemistry problem, been asking for ages! Is there any1 who knows what to do?
  • Need help with this kineticts problem!. Exam on monday!?
  • Need help with water and pH or ionization of water, etc.?
  • NEED HELP!! constant current...?
  • Need help: Equation for a silver halides when exposed to light? and describe an application for this reaction?
  • Need H-NMR help with phenylethylamine - how do u assign the peaks?
  • Need information of Plutonium?
  • Need K-values !?
  • Need of alloys of iron?
  • Need some chemistry help?
  • Need some chemistry help?
  • Need some chemistry help?
  • Need some help about elements?
  • Need some help with the Ideal gas law!?
  • Need some help!?
  • Need To know this please~?
  • Need to make 50mL of a buffer solution that has a pH of 9.7 in lab.. how do I do this?
  • Need your help?
  • Need your help?
  • Needing help with these...Double replacement reactions?
  • Negative and positive heat of solutions?
  • Nernst and photometry/spectrometry Please please help :o/?
  • Net Energy change?
  • Net Ionic Eq. in acidic Solution Cr2+(aq) + (Cr2O7)^2- (aq) --->?
  • Net ionic equation for powdered barium oxide is mixed with water?
  • Net ionic equation for solid iron(II) sulfite is heated strongly?
  • NET Ionic Equation help?
  • Net ionic equation?
  • Net Ionic equations of these redox reactions..?
  • Net ionic equations...?
  • Neutral Hydrogen?
  • Neutralization of antacid tablets?
  • Neutralization of antacid tablets?
  • Neutralization problem?
  • Neutralization reactions?
  • Neutralization?
  • Neutron question?
  • New with the whole Chem...How do I know what substance is a homogeneous or heterogeneous?
  • NH3 solution is titrated by HCl, calculate the pH at 3/4 point of the titration?
  • NH4NO3 + HCl-->?
  • NH4OH, ammonium hydroxide?
  • Ni2+(aq) + CH3C(=NOH)C(=NOH)CH3 yields...?
  • Nickel has a face-centered cubic unit cell. The density of nickel is 6.84 grams per centimeter cubed. What is?
  • Nickel Sulfate us green, sodium sulfate is colorless. what color would you predict for nicle chloride? To whic
  • Nitric acid or Sulfiruc acid for calculating dissolved metals in water?
  • Nitric oxide, NO, reacts instantly with oxygen gas to give nitrogen dioxide, NO2, a dark brown gas.?
  • Nitric oxide, NO, reacts instantly with oxygen gas to give nitrogen dioxide, NO2, a dark brown gas.?
  • Nitro explosives?
  • Nitrogen and Phosporous?
  • Nitrogen content in a sample of urea is 42.5%. What is percentage purity of urea in urea sample.?
  • Nitrogen plus water yield ammonia?
  • Nitro-glesrien ???
  • No atoms are lost from starting material in which kind of polymer?
  • No chem. do. plese help?
  • Noble Gas Configuration?
  • Noble prize?
  • Nobody knows anything about phosphorus or any other glow-in-the-dark materials?
  • Nomenclature. I need assistance!?
  • Normal salt and acid salt?
  • Nuclear Chemistry + Binding Energy?
  • Nuclear Chemistry Question.?
  • Nuclear Chemistry: Kinetics of Radioactive Decay question?
  • Nuclear consist of how many elements and what are they?
  • Nuclear decay?
  • Nuclear Decay?
  • NUCLEAR ENERGY Help?
  • Nuclear equations?
  • Nuclear magnetic resonance?
  • Nuclear power plants?
  • Nucleotide bases already attached to proteins form the copied side of the DNA ladder..true or false?
  • Number of disintergrations per half life?
  • Number of moles of EDTA used in titration?
  • Number of moles?
  • Number of particles?
  • Number of Protons?
  • O.N. of all the elements in KClO3?
  • OCR Chemistry Plan Flow Chart!! Help Please!!!?
  • Octahedral complex ions and unpaired electrons?
  • Of the compounds BaSO4, Ba3(PO4)2, and BaCO3, which are soluble in basic solution? In acid solution?
  • Of the following pairs correctly represent similar functions for a solution component and a colloid component?
  • Of the total NO of ATP molecules made by 1glucose molecule, how many R derived frm metabolic process in Mito*?
  • Of what characteristics of molecules is the magnitude of the critical temperature measure?
  • OH- and H3O+?
  • Oh lord chemistry.?
  • Oil and water?
  • Ok a student prepares a solution by combining CaCl2 and Pb(NO3)2. I need to know if a precipitate will form?
  • OK, If i am given different aspirin tablets, how do I find the % purity in each of them?
  • Okay how hard IS organic chemistry? Is it impossible to get if you're not naturally talented in science?
  • Okay, geniuses... Can you answer this?
  • Okay...how does *sufuric* acid work?
  • OMG!! Can someone please explain this equation to me?
  • OMW this Chemistry problem is even worse=(...please help!!!?
  • On a perodic table, how can you tell number of valence electons?
  • On the molecular level, what substance holds together the shell and contents of an atom and how does it work?
  • On what side of the periodic table are the elements at the top of the activity series?
  • On what two factors does the equilibrium vapor pressure of a liquid depend?
  • Once again another chemistry question?
  • Once again chem. help plz!?
  • One conjugate acid-base pair in the reaction, NH4 + OH -> <- NH3 + H2O is?
  • One day, Bob and Hannah were sitting out on their deck, sipping on some drinks. Bob ran into the house, got an
  • One example of a hydroflurocarbon in CH2f2 (subscript two's). The C-F bond is polar.?
  • One example uses of chromatography?
  • One liter of 1M NaOH will completely neutralize one liter of?
  • One liter of cooking oil = K.g?
  • One mole of an ideal gas is contained in a cylinder with a movable piston. The temperature is constant at 77掳C
  • One mole of something, this is for chemistry? I don't understand !?
  • One more equation to balance?
  • One more please?
  • One more question.?
  • One of the compartments has a concentration of Ag+ = 1.00M.?
  • One of the compartments has a concentration of Zn2+ = 1.00M.?
  • One of the half-reactions for the electrolysis of water is given below.?
  • One quart of 1/4 stock acid solution is.?
  • One sample of ethane contains 2.65 g of carbon and 0.668 g of hydrogen. Acetylene contains 4.65 g of carbon...
  • One way to form colloids is to break large particles into very small ones. How does this change the surface?
  • Online courses in Organic Chemistry II?
  • Only 9.0mL of HCL to neutralize 10 mL of NaOH?
  • Optical Microscope concept question?
  • Oraganic Chemistry Help!!?
  • Orangutans see deatail?
  • Orbital and Molecular Geometry?
  • Orders of reaction?
  • Orders of reactions H2O2 + 2I- + 2H+?
  • ORG: Add Br to 2 allylic C's in a cycloheptene?
  • Organic Chem question!! Please help me!?
  • Organic chem questions, help!?
  • Organic Chem sugars question. I'm stumped.?
  • Organic chem?
  • Organic Chemistry Help Please!!?
  • Organic Chemistry help...?
  • Organic Chemistry help...?
  • Organic Chemistry Help?
  • Organic Chemistry Question related to Substitution Reactions of Carbonyl Compounds at the alpha Carbon?
  • Organic Chemistry Question! Help Please... (Reaction Mechanisms)?
  • Organic Chemistry question. How do I seperate a particular mixture.?
  • Organic Chemistry reaction help (methyl shifts maybe?)?
  • Organic chemistry.SOS?
  • Organic Chemistry: How does the molecular size of a molecule affect its boiling and melting points?
  • Organic chemistry?
  • Organic chemistry?
  • Organic chemistry?
  • Organic Chemistry-Best leaving group for SN2 reaction?
  • Organic compound that results from the reaction of cyclohexanecarbonyl chloride with 1. (CH3)2CuLi and 2. H2O?
  • Organic compound that results from the reaction of Methyl cyclohexanecarboxylate & 1.DIBAL-H & 2.H2O?
  • Organic compounds reactants and products question.?
  • Organic synthesis?
  • Organic synthesis?
  • Organich Chemistry Qs???
  • Orgo-Chemistry - Methamphetamine-Functional Group Help!!?
  • Orme. how is it made?
  • Other commercial solvents are ___________ and ____________?
  • Other than compression, is there any way to convert methane into a liquid fuel?
  • Over boiling of benedict's solution?
  • Oxadizing reaction best suited to oxidation of C10H16N2 to C10H12N2O?
  • Oxaloacetic acid:?
  • Oxidation and Reduction?
  • Oxidation Help?
  • Oxidation number for each atom?? (help)?
  • Oxidation Number of Cr2(SO4)3?
  • Oxidation numbers; how do you get them? For example, NO3- = +5(-2)3 or NO = +2-2?
  • Oxidation of Aluminum?
  • Oxidation of butan-1-ol?
  • Oxidation reduction reactions occurring in mitochondria.?
  • Oxidation reduction reactions occurring in mitochondria.?
  • Oxidation refers to the gaining of _________.?
  • Oxidation states?
  • Oxidation states???
  • Oxidizing a primary alcohol in the presence of a strong oxidizing agent produces a ____________ acid?
  • Oxidizing a primary alcohol in the presence of a strong oxidizing agent produces a ____________ acid?
  • Oxidizing agent?
  • Oxidizing agents and reducing agents?
  • Oxidizing and reducing agents?
  • Oxygen and lungs?
  • Oxygen can be prepared by heating potasium chlorate2Kclo3(s) 2Kcl(s)+3O2 How manygof KCL3areneededtomake293gO2
  • Oxygen's valence electron configuration can be symbolized as:?
  • Oygen is very reactive (can react with nonmetals and metals).Is this consistent with it's electronegativity?
  • Ozone consists of 3 oxygen atoms right?
  • Ozone is a molecule that is helpful in the upper atmosphere but harmful at ground level. research the answer?
  • P-aminobenzoic acid + sulfuric acid creates what solid?
  • Paper Chomatography questions????
  • Partial negative and positive charges?
  • PaRTIAl Pressure CheMIStRy PRoblem help!!!!! Can you help me!?
  • Partial Pressure deals with density?
  • Partial Pressure question...?
  • Partial Pressure?
  • Partial Pressure?
  • Partial pressures of gases?
  • Partial Pressures?
  • Partition coefficient question?
  • Pauli Exclusion Principle?
  • PCl (g )<--> PCl3 (g) + Cl2 (g)?
  • PCl5 is a stable molecule. In contrast, antimony pentachloride, SbCl5, is unstable and spontaneously loses?
  • PCR & Electrophoresis gel...?
  • Pecent by mass?
  • Penicillin's nucleus.?
  • Percent abundance?
  • Percent as a fraction?
  • Percent Solutions?
  • Percent yeild qustion?


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