Question

A piece of iron ore is found to contain a compound containing 72.3% iron and 27.7% oxygen with a molecular mass of 231.4 g/mol. What is the molecular formula of the compound?

Answer 1

a pieceof iron ore is found to contain a compound containing 72.3% iron and 27.7% oxygen with molecular mass 231.4 gm/mol. find the molecular formula. Thus, ore contain 167.30 g of iron and 64.1 g of oxygen. Similarly, number of oxygen atom = 64