Chemistry Questions and Answers

  • Radioactive Decay question?
  • Radioactive decay?
  • Radioactive Isotope disintegrations?
  • Radioactive substance like salt?
  • Random University Chem Questions :)?
  • Rank Ba, Ca and Na in order of increasing 2nd ionization energy?
  • Rank the following compounds in order of increasing solubility in water?
  • Rate = k [CO]3 This is a _______ order reactant?
  • Rate equation?
  • Rate expressions?
  • Rate of a reaction with...?
  • Rate of Decay?
  • Rate of Reaction Experiment Ideas?
  • Rate of reaction of a chemical reaction?
  • Rate of reaction question?!?
  • Rates of effusion/diffusion problems? (will give best answer)?
  • Rates of Reaction - For the figure above (b) refers to..?
  • Rates of Reaction - Grade 12 Chemistry?
  • Reaction A<=>C has equilibrium constant of 0.312. If 0.68 mol of C was used, how much A is formed at eq.??
  • Reaction between Au and Pb?
  • Reaction between Copper and Gasoline?
  • Reaction between slaked lime and fertiliser?
  • REACTION KINECTICS-- Multiple Choice ---PLEASE HELP?
  • Reaction Kinetics -- Chemistry Multiple Choice Questions please help! #'s 1,2,3,5?
  • Reaction of beryllium carbide with water,?
  • REACTION OF HYDROGEN PEROXIDE WITH IODIDE ive done experiment and plotted graph to calculate gradient, which?
  • Reaction of?
  • Reaction prediction?
  • Reaction Rate vs. Reaction Time?
  • Reaction rates...?
  • Reaction with P4O10?
  • Reaction...?
  • Reaction...?
  • Reaction...?
  • Reactions needed to obtain 1-(4-methoxyphenyl)-2-methylpropan-1-ol from 2-bromopropane & 4-methoxybenzaldehyde
  • Reactions of enolate anions...I need help ASAP! =)?
  • Reactions with sodium metal?
  • Reactivity series..learning?
  • Read below?
  • Really hard Chem problem?
  • Really hard pH question!! HELP ME PLEASE!!?
  • Really need help wit this problem?
  • Really need help with this chem question please?
  • REALLY REALLY NEED THESE ANSWERS!! Please?Help! I promise 10 points!?
  • Reason of zigzag arrangement of hydrogen bonding in solid hydrogen flouride?
  • Red blood cells transport which two chemicals in our bodies?
  • REDOX Equation Question...?
  • REDOX help?
  • REDOX help?
  • Redox indicators?
  • Redox reaction for manganese?
  • Redox Reaction Help?
  • Redox reaction: Mixing HCl + Mg yields what..?
  • Redox Reactions -- Electrons Transferred?
  • Redox Reactions in Basic Aqueous Solution?
  • Redox reactions often can be most easily balanced by first dividing them into ___________;?
  • Redox reactions!!!!!?
  • Redox reactions?
  • Redox Reactions?
  • Redox Stoichiometry?
  • Redox Stoichiometry?
  • Reduction at electrode surface, determine mass deposited - 10 points for explanation?
  • Reduction can be defined as "a _________ in oxidation number".?
  • Regarding equilibrium reactions, how can you find the value of Kc using concentration?
  • Regarding the halogens, which statement is most accurate?
  • Relationship between light absorbance and solution concentration?
  • Relationship of activities of halogens to their position on the periodic table, and with metals?
  • Relative atomic mass and relative molecular mass and relative formula mass?
  • Report on Quarks?
  • Re-saturating Polyunsaturated Oils?
  • Research experiment suggestions?
  • Resin beds that you can buy commercially. What anion-cation combo do they normally use?
  • Resolution of human eye in millimetres??
  • Resultant ph?
  • Reversable equation question...?
  • Reverse Carnot cycle?
  • Reversible Reactions?
  • Revision aid for AS level Chemistry?
  • Rewrite0.0000000000193 in scientific notation?
  • Rewrite0.0000000000193 in scientific notation?
  • Riot contol Gas?
  • Rocks and weathering?
  • Role of surface tension in medicine?
  • RXN between Propane and Oxygen C3H8+5O2---3CO2 +4H2O. Which ratio of oxygen to propane is correct?
  • Rydberg equation question! help?
  • Safety precautions when using HCl (what to do if.)?
  • Salt crystals?
  • Salt hydrolysis: for KCl the pH is 7.5 ...explain this with an equation?
  • Salt on Ice?
  • Salt on Ice?
  • Saltpeter Questions?
  • Salts incorporating all but one of the following ions are usually soluble. Which Ion is the exception?
  • Saturated and unsaturated fat?
  • Saturated hydrocarbons,the alkanes,have the general formula C(n)H(2n+2) where n is a whole number?
  • Say whether 2- pentene and 1,2-dichloroethene is Z or E?
  • Sceince atomic sstructure quesrions?
  • Science (equillibrium)?
  • SCIENCE (matter) question??
  • Science [ASAP!!]?
  • Science + Drugs?
  • Science challenge?
  • Science crossword help?
  • Science crossword puzzle?
  • Science experiments?
  • Science experts, element help needed.?
  • Science experts, element help needed.?
  • Science experts??
  • Science help with crossword?
  • Science help with crossword?
  • Science help!!! please?
  • Science help!!! please?
  • Science Help!!! Why does water change state at temperatures well below boiling point(100)?
  • Science Help!!?
  • Science help!?
  • Science help?
  • Science Homework Help!!?!?!?
  • Science homework my son is stuck on.?
  • Science Homework: Absolute Dating (finding out the age of fossils)?
  • Science is sos?
  • Science project help..?!?
  • Science project help..?!?
  • Science question !?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science question?
  • Science questions please help if you know =]?
  • Science questions. please help if you know =)?
  • Science questions?
  • Science questions?
  • Science(Determine a chemical, or chemical process that is harmful or disgusting in the making of this food?>
  • Scientific method?
  • Scientific name for iron ?
  • Scientists..?
  • Sebacic acid instead of sebacoyl chloride?
  • Secific Heat Capacity Question?
  • Second Law Of Thermodynamics?
  • See details.?
  • Select the compound that is not a conductor in aqueous solution:?
  • Select the incorrect statement about alpha, beta and gamma rays of radiation?
  • Select the incorrect statement about radiaton.?
  • Select the incorrect statement about the chemical activity at electrodes during electrolysis:?
  • Select the indicator that changes color at a pH of 1?
  • Select the light metal with a low melting point?
  • Select the major product that would result from the reaction:?
  • Select the major product that would result from the reaction:?
  • Selective oxidation of propene to acrolein?
  • Selenious acid, H2SeO3 has Ka1 = 3x10^-3 and Ka2 = 5x10^-8. What is the pH of a .50 M solution of H2SeO3?
  • Separating a Precipitate?
  • Seperate oil from liquid???
  • Shape and symmetry in molecules?
  • Shape of water molecule?
  • Shell in an Element Help ?
  • Should I study Organic or Inorganic Chemistry?
  • Should i take AP Bio if i liked Biology freshman year but hated chemistry this year.Will APBIO be like reg bio
  • Should I take Biochemistry as a freshman?
  • Should the world start growing high level sugar producing crops in vast quantity to prepare for oil eventually
  • Should this substance be banned and what is it?
  • Show how the structure of an amino acid explains the term amino acid.?
  • Show how to calculate the molar mass of a compound by using the periodic table of elements.?
  • Show the reaction that occurs when someone is tested for intoxication and what would identify the alcohol?
  • Sig Figs - Chem?
  • Sig Figs Chem?
  • Sig figs of 1097.25?
  • Significant Figures?
  • Silver has a face-centered unit cell. The diameter of a silver atom is about 2.90 angstroms. Use this measurem
  • Silver Nitrate lip burn?
  • Silver nitrate reacts with sodium chloride in a double replacement reaction. What products are formed?
  • Simple buffer question?
  • Simple Chemistry?
  • Simple Conversion?
  • Simple parts per million calculation?
  • Simple problem?
  • Simple Stoichiometry Question?
  • Since H20 has " H " infront of it, does that make water an acid?
  • Since mercury is a toxic metal, why is it used in a liquid barometer instead of water?
  • Since mercury is a toxic metal, why is it used in a liquid barometer instead of water?
  • Since no matter what unit quantity we are given, we must change it into moles, we do this by using?
  • Since oil does not dissolve in water, it is said to be...what?
  • SiO2 + 2C --> Si + 2CO what mass of sand(SiO2) is needed to produce 45.0 g of silicon?


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