Asked by Mia

how many moles of O2 are needed to produce 12.4 g of P2O5 from the equation P4 + 5O2 = 2P2O5?
Answered by R_scott
find the molar mass of P2O5

12.4 / molar mass = moles

each mole of P2O5 uses 5/2 mol O2 for production