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The molar mass of cellulose is approximately 6.0 x 10^5 g/mol and the molar mass of a soluble starch is on the order of 4.0 x 10^3 g/mol. The monomer unit in both of these molecules has the emperical formula C6H10O5. The uits are about 5.0 x 10^-10 m long. About how many units occur in each molecule, and how long are the molecules of cellulose and starch as a result?
Indicate whether or not each of the following compounds is soluble in water. If the compound is soluble, what ions are produced a. PbI2 b. Li2SO4 c. Fe(NO3)3
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
A sytringe contains 589 mL of CO at 325K and 1.2 atm pressure. A second sytringe contains 473mL of n2 at 298K and 2.6atm. What is the final pressure if the contents of tese two syringes are injected into a 1.00L container at STP
A 10.0 mL aliquot of this weak acid solution was titrated with a 0.0498 M NaOH solution. The equivalence point was reached by adding 11.62 ml of NaOH from the buret. What is the molar mass of this unknown acid
the molecule 2,2-dimethylheptane, draw Newman projections of the most and least stable forms of 2,2-dimethylheptane, viewing doen the C3-C4 bond, label th energy vs conformation angle diagram
A 0.2678g sample of an unknown acid requires 27.21mL of 0.1164 M NaOH for neutralization to a phenolphthalein endpoint. There are 0.35mL of 0.1012 M HCl used for back-titration. What is the molar mass of the unknown acid
When a strong base is added to a solution of CuSO4, which is pale blue, a precipitate forms and the solution above the precipitate is colorless. The net chemical equation is Cu(2+)(aq) + 2OH(-)(aq) --> Cu(OH)2(s)
Which would have a higher energy of activation and why, nitration of 4-bromonitrobenzene or nitration of bromobenzene
A solution of an unknown nonvolatile electrolyte was prepared by dissolving 0.250 g of a substance in 40 g of CCl4. The boiling point of the resultant solution was 0.357 degrees Celsius higher than that of pure solvent. Calculate the molar mass of..
Molar concentration, 2.20g of solid NaOH are added to 250mL of a 0.10M FeCl2 solution. Given that Ksp for Fe(OH)2 is 1.6 x 10 -14, calculate the following
Calculate the Calorimeter Constant if 25 g of water at 50 C was added to 25 g of water at 25C with a resulting temperature of 35 C?
The transmittance of the mixture was read and compared to a calibration curve which indicated a concentration of I3^- as 5.52*10^-4 M. Calculate the following: c.) The concentration in moles/L of IO3^- in the original sample.
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