Chemistry Questions and Answers

  • Ethanol why...?
  • Ethene (ethylene) gas is bubbled through a solution of bromine.?
  • Ethene + high pressure and heated catalyst gives?
  • Ethlene glycole >> HOCH2CH2OH, is it likely to be soluble in water? in paint thinner? can u plz explain?
  • Eudragit for coating solution safe to use?
  • Evaporating water question?
  • Evaporation is an example of a chemical change. (True or False)?
  • Evaporation of a Solution?
  • Evaporation of Acetone...?
  • Ever heard of Selenium dioxide,SeO2???
  • Everyone knows H2O is water, but does anyone know the story of how we came to know that?
  • Exactly, what does crude oil contain?
  • Exampels of the element nickel?
  • Examples of pharmaceutical coating polymer?
  • Examples of substances?
  • Exaples of rocks?
  • Excel help on chemistry lab?
  • Excited electrons.?
  • Exothermic or Endothermic?
  • Exothermic process or endothermic process? Changes physical or chemical?
  • Exothermic reactions pls?
  • Experiment needed to investigate the lowest temperature that kills yeast cells?
  • Experimental design?
  • EXPERTS? anyone else heard of Xanthones? What other foods contain them?
  • Explain Equilibrium Shift?
  • Explain how a catalyst can affect the rate of reaction but not be in the overall equation.?
  • Explain how a change in the amount of a product causes a shift in equilibrium?
  • Explain how a molecule can have polar bonds yet be nonpolar?
  • Explain how a solute can dissolve polar and nonpolar solvents??
  • Explain how Beer's law can be applied in food, drugs, and medical testing?
  • Explain how it is possible for a compound to have both ionic and covalent bonds?
  • Explain how removing energy from liquid can cause the liquid to freeze.?
  • Explain how to calculate the number of molecules in 3 moles of chlorine gas?
  • Explain how very low carbohydrate diets cause loss of lean muscle tissue.?
  • Explain how water's high specific heat helps guard against swings in the body's core temperature as the outsid
  • Explain how you can determine if a chemical reaction represents a single-replacement reaction or a double?
  • Explain metamers with example.?
  • Explain PLEASE!?
  • Explain position on the ethical impliations of stem cell research.?
  • Explain the difference between physical and chemical properties?
  • Explain the following phenomenon?
  • Explain the relationship between the freezing point of a solution and the molality of a solution?
  • Explain the water solubilities in different compounds?
  • Explain this question for me, please!?
  • Explain type of isomerism is there in Pentan-2-one and Pentan-3-one?
  • Explain what mphoteric means using H2S as an example?
  • Explain what must happen to a fixed sample of gas when its tempature changes?
  • Explain whether the photons emitted by a bright light bulb are more energetic than a dim bulb the same color..
  • Explain which molecule compound, the polar or the non polar, will have the higher boiling point.?
  • Explain why a 1m solution of the compound AlCl3 in water has a lower freezing temperature than a 1m solution o
  • Explain why a 1m solution of the compound AlCl3 in water has a lower freezing temperature than a 1m solution o
  • Explain why a 1m solution of the compound AlCl3 in water has a lower freezing temperature than a 1m solution o
  • Explain why a 1m solution of the compound AlCl3 in water has a lower freezing temperature than a 1m solution?
  • Explain why a carbonyl group in benzil is more electrophilic than a simple ketone like dibenzyl ketone.?
  • Explain why a low temp. which gives a higher percentage yield of ammonia, is not used in the Haber Process?
  • Explain why a substance containing only long hydrocarbon chains would not be a good emulsifier of water an oil
  • Explain why although SO3 contains no H, when it dissolves in water the resultant solution is acidic.?
  • Explain why atoms will often join together to form bonds?
  • Explain why Butane, Propanone and Ethanoic acid have similar molecular mass but different boiling points?
  • Explain why dissolution rate is increased by mixing?
  • Explain why equal volimes of 0.1 M CH3COOH and 0.1 M NaCH3CO2 function as a buffer solution.?
  • Explain why fruit juice concentration can be confusing or misleading?
  • Explain why HCH3COO is not a polyprotic acid?
  • Explain why one of the three structures for C2H2Cl2 is nonpolar and the other two are dipoles?
  • Explain why substances burn faster in pure oxygen than in air at the same pressure?
  • Explain why the air we breathe and solids such as steel and bronze, are solutions or homogeneous mixtures?
  • Explain why the reduction of camphor with lithium aluminum hydride gives 90% isoborneol & 10% borneol.?
  • Explain why the saturation temperature is that temperature at which the first crystals appear??
  • Explain why the three isomers have the same molecular mass but different boiling points?
  • Explain why there is an allotrope of silicon with the same structure as diamond?
  • Explain wy a blloon becomes smaller when placed in a freezer?
  • Explain, A solution is not a mixture, it is just a solution.?
  • Explaining the difference in boiling points?
  • Explanation of electron capture?
  • Explanation of the chemical reaction of Sodium Bicarbonate and citric acid with water?
  • Explanations For The Following:?
  • ExpReg y = a x b^x where a = 10001 and b = 0.90002, find the half-life of the isotope in minutes?
  • Extinction coefficient of solution of proteins, how to find it?
  • Extraction?
  • EXTREMELY DIFFICULT ELECTROCHEMISTRY.. Can YOU do it?
  • Face-centered unit cell.?
  • Factors affecting reactions?
  • Facts against cloning for debate?
  • Faraday question?
  • Fat and water soluble vitamins?
  • Fat from casein found in milk can be separated by dissolving in ethanol. But why does it dissolve in ethanol??
  • FCl3 + H2O = ??? My text book says the pH is acidic - Someone explain also using equations please?
  • FeCl3(aq)+Na3PO4(aq)?
  • Fermentation doesn't produce ant ATP so what is its importance?
  • Few Chem Questions!?
  • Few more equations help problems?
  • Fill in blanks urgent!!?
  • Fill in the blanks for chemistry?
  • Fill in the blanks for chemistry?
  • Filtering/distilling water...?
  • Final concentration of NaOH?
  • Final pressure of hydrogen azide after decomposition?
  • Find boiling point and composition of mixture using vapour pressures?
  • Find change in enthalpy, help!!!?
  • Find delta S surrouding?
  • Find H fusion?
  • Find IUPAC name, ion, protons and elections?
  • Find Keq at this temperature?
  • Find Kp given Total Pressure?
  • Find percentage Iron2 in unknown solution using Potassium Permagnanate as the standard to titrate with?
  • FIND PH and POH; hydroxide ion concentration 1.69 x 10^-7 M (OH-);?
  • Find pH of a solution that is .20 M acetic acid, HC2H3O2, and.20 M sodium acetate, NaC2H3O2. Ka = 1.8 E-5?
  • Find the empirical formula of compound X?
  • Find the enthalpy change when 1.4 moles of hydrazine is burned?
  • Find the hydroxyl proton on H NMR of isopentyl alcohol?
  • Find the least common multiple of 8 and 11?
  • Find the limiting reactant when 1.5g of CaCO3 reacts completely with 0.73g of HCl. How much CO2 should be prod
  • Find the mass(in grams) of 1.0*10^6 atoms of helium?
  • Find the number of atoms in a nickel if a nickel has mass of 5g.?
  • Find the pH?
  • Find the sum of first 18 terms of an A.P . Whose n th term is 3-2n?
  • Find the value of b that would make the following relation not a function: R={(b-16, 55), (2b+5, 14)}?
  • Find the value of b that would make the following relation not a function: R={(b-16, 55), (2b+5, 14)}?
  • Find the voltage?
  • Finding [OH] in a .35M solution of NaCN?
  • Finding Delta E.?
  • Finding empirical formula?
  • Finding energy with e=mc2?
  • Finding Kb when your just given Ka.?
  • Finding pH from M?
  • Finding pH question--?
  • Finding pH?
  • Finding pH?
  • Finding the amount of water?
  • Finding the mass of oxygen?
  • Finding the mass!?
  • Finding the standard heat of formation?
  • Fins made from iron or aluminum...?
  • Fire help >>>?
  • First person to name the hardest known substance gets 10 points?
  • Flame colors!?
  • Flame temp of a gasoline fire?
  • Flame Test?
  • Flower indicators ...really need help!!!!?
  • Fluorine?? Plz help!!!!!!!! 10pts for best answer!!!?
  • Following ?
  • Food spoilage sensor?
  • For 1.2 mole of the radioactive isotope iron-59, half-life = 45.1 days, how many disintegrations?
  • For 1.3 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations?
  • For 1.4 mole of the radioactive isotope molybdenum-99, half-life = 67 hours, how many disintegrations?
  • For 1.4 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations?
  • For 1.4 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations?
  • For 1.5 mole of the radioactive isotope iron-59, half-life = 45.1 days, how many disintegrations have?
  • For 1.5 mole of the radioactive isotope xenon-133, half-life = 5.3 days,?
  • For 1.6 mole of the radioactive isotope chromium-51, half-life = 27.8 days, how many disintegrations h
  • For 1.7 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations?
  • For 1.7 mole of the radioactive isotope xenon-133, half-life = 5.3 days, how many disintegrations have
  • For 1.8 mole of the radioactive isotope phosphorus-32, half-life = 14.3 days, how many disintegrations
  • For 1.8 mole of the radioactive isotope xenon-133, half-life = 5.3 days, how many disintegrations have
  • For 1.8 mole of the radioactive isotope xenon-133, half-life = 5.3 days, how many disintegrations have
  • For 1.9 mole of the radioactive isotope chromium-51, half-life = 27.8 days, how many disintegrations h
  • For 1.9 mole of the radioactive isotope strontium-87, half-life = 2.8 hours,?
  • For 2.0 mole of the radioactive isotope molybdenum-99, half-life = 67 hours,?
  • For 2.0 mole of the radioactive isotope phosphorus-32, half-life = 14.3 days, how many disintegrations
  • For 2.0 mole of the radioactive isotope strontium-87, half-life = 2.8 hours, how many disintegrations?
  • For 2.0 mole of the radioactive isotope xenon-133, half-life = 5.3 days, how many disintegrations have
  • For 1.4 mole of the radioactive isotope phosphorus-32, half-life = 14.3 days?
  • For 1.3 mole of molybdenum-99, half-life 67 hours, how many disintegrations occured after 20 mins?
  • For 1.6 moles of the radioactive isotope sodium-24, that has a half-life = 14.8 hours...?
  • For 2S(s) + 3O2(g) -> 2SO3(g): if 9.35g of S is reacted with 20.0g of oxygen, what's the limiting reactant?
  • For 50mL of 0.2NaOH, what mass of NaOH do you start with?
  • For a chemical reaction, DH掳 = 88.88 kJ/mol and DS掳 = 177.42 J/mol路K.?
  • For a first order reaction the rate R = 鈭択 N so the ratio of rates at two different times is given by?
  • For a first order reaction the rate R = 鈭択 N?
  • For a first order reaction the rate R = 鈭択 N?
  • For a first order reaction the rate R = 鈭択 N?
  • For a good pyrotechnician: To settle a score, can a gas tank blow up an entire car?
  • For a hydrogen atom which of the following does NOT characterize n=1?
  • For a solution conatining at least one of the cations involved in this experiment, answer the following.?
  • For all you brainiacks!!! See the question below.?
  • For all you chem wizzes out there... moles/solution/calculate/concentration...help please?
  • For an exothermic reaction, heat is given off in the process. (True or False)?
  • For an exothermic reaction, the rate law at 298K is Rate = k[H2][I2].?
  • For coordination compound K3[Fe(CN)6] give the oxidation state of the transition metal + coordination number
  • For each of the following reactions, state whether the reaction is spontaneous or nonspontaneous as written or
  • For each of the following reactoins..10 POINTS! WoW! :D?
  • For each of the following solutions, choose a appropriate buffer?
  • For each of the following, state whether the solution at 25掳C is acidic, neutral, or basic.?
  • For each precipitate formed, write a double replacement reaction?
  • For easy points click here and answer chemistry questions. I am assuming these are easy?
  • For easy points click here and answer chemistry questions.?
  • For easy points click here and answer chemistry questions.?
  • For Gervald F. Using a U V lamp I can expect what & does moisture hold critical factor?
  • For K3[Fe(CN)6] give the oxidation state of the transition metal followed by the coordination number?
  • For measurement units what are large masses measured in and what are small masses measured in?
  • For nice people?
  • For science enthusiasts, how do you covert CO2 into C + O2?
  • For the below reaction, which change(s) will increase the fraction of SO3(g) in the equilibrium mixture?
  • For the coordination compound [Ag(NH3)2]NO3?
  • For the coordination compound [Cr(NH3)5I]I2, give the oxidation state of the transition metal followed by?
  • For the coordination compound [Cu(NH3)4]SO4 give the oxidation state of the transition metal followed by t
  • For the coordination compound [Cu(NH3)4]SO4 give the oxidation state of the transition metal followed by t
  • For the coordination compound [Cu(NH3)4]SO4 give the oxidation state of the transition metal followed by t
  • For the coordination compound K2[CoCl4] give the oxidation state...?
  • For the coordination compound K3[Fe(CN)6] give the oxidation state of the transition metal followed by the


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