a. Calculate the molar mass of Glucose (C6H12O6).
b.How many moles of Glucose are in a 1.56×10^-2 g sample?
c.What number of atoms of nitrogen are present in1.00g of each of the compounds in H2N-NH2?

Consider the following reaction:




Al2O3 + 2Fe = 2Al+Fe2O3




453g of Fe is produced with 80% yield the reaction of 952g of an ore source containing Fe2O3 with excess Al. Find mass percent of Fe2O3 in ore.

Consider the following reaction that is used to produce hydrogen cyanide (HCN):




2NH3(g) + 3O2(g) + 2CH4(g) = 2HCN(g) + 6H2O




If 5٫00×10^3 kg each of NH3, O2 and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 85٫0% yield?