To calculate theoretical and percent yields, given the masses of multiple reactants.

A balanced chemical reaction gives the mole ratios between reactants and products. For example, one mole of white phosphorus, P4 , reacts with five moles of oxygen, O2 , to roduce two moles of diphosphorus pentoxide, P2O5:

A-What is the maximum number of moles of P2O5 that can theoretically be made from 112 g of P4 and excess oxygen?

Express your answer to three significant figures and include the appropriate units.

B-What is the maximum number of moles of P2O5 that can theoretically be made from 112 g of O2 and excess phosphorus?

Express your answer to three significant figures and include the appropriate units.