Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.

Determine the empirical formula of an oxide of iron, which has 69.9% i

1.	Determine the empirical formula of an oxide of iron, which has 69.9% iron and 30.1% dioxygen by mass.
Answer» SOLUTION :CALCULATION of EMPIRICAL formula: `THEREFORE` Empirical formula `=Fe_(2)O_(3)`.