Question

A compound contains only iron, fe, and oxygen, o. the compound is 72.30% iron and 27.64% oxygen. what is the empirical formula for the compound?

Answer 1

100 g of the compound contains 72.36 g of iron and 27.64 g of oxygen.

Ratio of atoms of Fe and O, Fe : O = 72.36/56 : 27.64/16 = 1.292 : 1.727 = 1 : 1.33 = 3 : 4

Therefore, the empirical formula of the compound is Fe3O4.

Step-by-step explanation: