Chemistry Questions and Answers

  • explain why more time is required to boil pasta in denver, colorado, than in New Orleans, Louisiana.?
  • Explain why para-methylaniline undergoes nitration much faster than benzene?
  • Explain why sodium chloride crystals do not show conductivity?
  • Explain why the conjugate acid of the weak base NH3 is a weak acid.?
  • Explain why the following statements are wrong??
  • explain why the molecular size of the individual gas particles has no effect on the total volume of the gas?
  • Explain why the rates of diffusion of nitrogen gas and carbon monoxide are almost identical at the same temper
  • explain why water expands when it freezes?
  • Explain why water is solid by the time it reaches 0 degrees celcius?
  • explain why... in chemistry!?
  • explain yhe meaning reflux in distillation?
  • Explain, using the reaction with water, why ammonium chloride is slightly acidic?
  • Explaination chemistry question!!?
  • Explaining SOLID LIQUID GAS to a child?
  • explanation of some science terms?
  • extracting gold from it's plated component?
  • Extraction?
  • f(x)=-4x^2-7x-2?
  • F2+, answer the following questions about the given ion.?
  • Fact about phenol?
  • factors for C02 in yeast?
  • Fast Help! Help! Alcohol Dehydration of 4-methyl-2-pentanol with sulfuric acid?
  • Fatty acid analysis?
  • Fatty acids, alcohols, and aldehydes how are they related?
  • Fe 3+ ion solution was added to an unknown acid solution and it turned purple, what does this tell you?
  • Fe2+ or Fe3+?
  • FeO+H2SO4+KMnO4?
  • fermentation of yeast?
  • ferric orthophosphate?
  • Fertilisers contain three essential chemical elements...?
  • Few questions about carbon-14?
  • Figuring out the Tfinal (see details)?
  • filling in d blanks?
  • Film Canister Rockets---Fuel type? Vinegar+Baking soda?
  • Final Molarity?
  • Find all values of k for which the differential euqtion y'' + ky' + ky = 0 has a general solution.
  • find empirical and molecular formula?
  • Find Equilibrium constant for a gas reaction?
  • Find L HNO2 and NaNO2?
  • Find Rate (min^-1) in a generic reaction ..?
  • find the # of molecules or ions?
  • Find the % of Cu in the original mixture, if 0.752g of residue is produced on reducing 0.92g of Cu+CuO in H2?
  • Find the constant of variation if P is directly proportional to t, and P = 210 when t = 14.?
  • find the definition of the word syndiotactic. Does this word apply to polypropylene?
  • Find the mass in grams of benzoic acid and mass %?
  • find the mass?
  • Find the molality, molarity and mole fraction of ethylene glycol?
  • find the molar mass of CsCl?
  • find the molar solubilty of silver chloride in 0.20 M NaCl (aq) with ksp= 1.6x10^10 and iron (II) Hydroxide in
  • Find the number of molecules or ions.?
  • Find the number of moles of argon in 607 g of argon.?
  • find the number of moles of the compound given the mass. and how using the conversion factor method.?
  • Find the pH of a solution prepared by dissolving 0.65 mol of the strong base NaOH in 1.0 L of water?
  • Find the rate law and the overall reaction order for the reaction of H2 + I2 --> 2 Hi?
  • Find the Volume of NaOH?
  • Finding an isotope's half-life?
  • finding boiling point?
  • finding concentration at equilibrium?
  • Finding equilibrium concentration of HCL mixed with HNO2?
  • Finding Ka given avg pH and avg Molarity?
  • finding OH concentration?
  • Finding partial pressures?
  • Finding pH?
  • Finding pH? Did I do it right?
  • Finding the concentration of acid...?
  • finding the half life of a reaction.?
  • Finding the oxidation number in a compound?
  • finding the pH of a solution?
  • fingerprint treated with cyanoacrylate and blue-green flouresecent dye?
  • fingerprint treated with cyanoacrylate rhodamine 6G flourescent dye?
  • fingerprint treated with cyanoacrylate rhodamine 6G flourescent dye?
  • Finish this equation?
  • Fireworks at wholesale?
  • First Element Discovered?
  • first order reaction?
  • First Order Reactions Help?
  • First person to answer science questions correct will get 10 points.?
  • First-Order Reaction has rate constant of 7.5 x 10^-3, Time required for reaction to be 60% complete?
  • Fission Vs Fusion?
  • Five lines in the H atomic emission spectrum have the following wavelengths (in nm):?
  • five most important elements for life?
  • Flame Test Colors for Pure Elements?
  • Flame Test Lab: HELP!?
  • Flame test...?
  • Flammable Non-Dairy Creamer?!?!?
  • fluid equation?
  • Fluorine info please? =)?
  • follow the course of the reaction help??
  • Food Science?????????
  • foods are usually frozen below 0 degrees.give the reason?
  • Foods with Elements?
  • For C2H6 what is the angle of each H?C?H bond, in degrees?
  • for 1000 grams of tears, how many grams of salt?
  • for a given substance, what information links mass to moles? number of particles to moles?
  • For a Lewis structure where the oxygen atom has a formal charge of plus one, what is the charge on the one ter
  • for alkanes and alkenes reactions, what is the function of Sulphuric acid test and the expected result?
  • for alkanes and alkenes, what is the function of baeyer test and expected result?
  • For chemistry, i have a question concerning single replacement reactions?
  • For eac of tese indicate whether the members are isobars , isotopes or neither.?
  • For iodine the enthalpy of sublimation is 62.0 kJ/mol. The entropy of sublimation is 145 J/(K mol).?
  • For mercury the enthalpy of vaporization is 58.5 kJ/mol. The entropy of vaporization is 92.9 J/(K mol).?
  • For the equation Ag + NO3 - à Ag + + NO?
  • For the equation ln k= -Ea/RT + constant , what does the constant stand for?
  • For the gas reaction 2NOBr <---> 2NO + Br2 deltaH = +61.1kj Which of the following statements are true?
  • For the gas reaction?
  • For the gas reaction?
  • for the ideal gas law is pressure, volume and temp. directly or inversely proportional?
  • For the molecule SbF5?
  • For the reaction C(graphite) + O2(g) CO2(g), H° = -393 kJ/mol.?
  • for the reaction C4H8 (g) --> 2 C2H4 (g) , Activation Energy/R=31513.110 K and A=4.098x10^15 sec^-1?
  • For the reaction whose reactants and products are: reactants: H2S (g) O2 (g)products: H2O (g) SO2 (g?
  • For the reaction whose reactants and products are:?
  • For the reaction whose reactants and products are:?
  • For the reaction whose reactants and products are:?
  • For the reaction whose reactants and products are:?
  • For the reaction whose reactants and products are:?
  • For the reaction whose reactants and products are?
  • For the same reaction, what is the maximum useful work (kJ) that can be performed on the surroundings from the
  • For the same reaction, what is the maximum useful work (kJ) that can be performed on the surroundings from the
  • For the stepwise dissociation of aqueous H3PO4, which of the following is not a conjugate acid-base pair?
  • For this reaction: 3A + 2B + C ---> Product, answer the following:?
  • For water, at its boiling point, the entropy of vaporization is 118 J/(K mol)?
  • For what reason would I be asked to plot the data of a chemistry experiment in both Kelvin and Celsius degrees
  • For you, what are the importances of solutions (chemistry) in real life?
  • Force that attracts or repels particles?
  • Forces of attraction?
  • Formation of a Precipitate?
  • formation of glycosaminoglycans?
  • Formation of preceipitates?
  • formation of sodium carbonate?
  • formula for calcium and argon?
  • Formula Mass?
  • Formula of caustic soda?
  • Formula of compound?
  • formula of starch paste?
  • Formula Reference Sheets?
  • formulas-organic chem?
  • fortwo isotopsofthe same element in w/ccase an electron have higherpotentialenergyif theofM thesame valule?
  • forward and reverse reactions?
  • Four chemistry/physics questions?
  • Four examples of each of pure substance and mixture?
  • Freezing point depression question. Please help me out. I am one stumped girl.?
  • Freezing Point Depression!?
  • Freezing Point Depression?
  • Freezing Point Problem. Check my Work!?
  • Freezing Point Question?
  • Freezing Point Questions from molalities? Some Help Please...?
  • freezing point questions:?
  • Freezing Point Questions?
  • Friedel Crafts acylation?
  • From the following list of symbols, choose 2 elements that are likely to form an ionic bond: O, Ne, S,Ca,K.?
  • from where should we start studying organic chemistry?
  • fromulas for compounds?
  • FUEL + TEFLON?? will it desolve or make chemicle reaction?
  • Fuel questions?
  • Fuels-!! Help!!?
  • Fuming Sulfuric?
  • fusion is the process in which a radioactive nucleus splits to form less massive nuclei?
  • Fusion of an iron nucleus with a helium nucleus, which elemtn will this get me?
  • gamma rays and visible lights are two types of electromagnetic radiation?
  • Gas chromatography?
  • Gas Chromatography-MS help?
  • gas density?
  • Gas Law Help?
  • Gas laws...need help?
  • Gas Laws???
  • Gas Molecules Help?
  • Gas phase reaction please help?
  • gas stoichiometry!?!?
  • Gas Stoichiometry?
  • Gases are more compressible than solids:?
  • gases dissolve better: when pressure is increased, temperature is decreased or both?
  • Gasoline and ethanol?
  • Gasoline freezing?
  • Gay-Lussac's Law Problem...Help!?
  • GC Internal standard for p-benozoquinone?
  • General Chemistry: Consider the following reaction:?
  • General Chemistry?
  • general knowledge chemistry questions?
  • Generally do all acid solutions contain the H^+ ions?
  • genetics home work questions?
  • geology questions?
  • Getting a suntan would involve..?
  • Giant molecular structure of SiO2?
  • Gibbs Free Energy?
  • give 2 reasons why air is considered a mixture?
  • Give 2 reasons why rate of chemical reaction increases with increasing temperature.?
  • give 50 chemical compounds their chemical form, chemical mass, common name and their uses?
  • Give a detailed explanation of the use of calcium carbonates as a building material.?
  • give an account of the trends and patterns shown by the properties of the elements in the periodic table?
  • give an example of a chemical change, when a chunky precipitate is formed?
  • give an example of a physical change, when a chunky precipitate is formed?
  • give detailed for symbiosis for taking admmission in it?
  • give full story of carbon?
  • give me some oportunities for MSc chemistry?
  • give me structure of metal benzene(benzena) and xylene and give me the uses of it?
  • give some examples of action and reaction in daily life? some funny ones?
  • Give the # of valence electrons in N,As,Br & Se. Predict the # of covalent bonds needed 4 each of these...?
  • Give the chemical equation for turning hydrogen into helium.?
  • give the chemical formula of magnesium was burned in an oxydizing flame it produces a very bright light and wh


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