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

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

Determine the Empirical formulae 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% iron and 30.1% oxygen by mass.

Determine the empirical formula of an oxide of iron which contains 69.9% iron and 30.1% oxygen by mass.

Determine the empirical formula of an oxide of iron which has 69.9% iron and 30.1% oxygen by mass. (Atomic mass : Fe = 55.85 amu, O = 16.00 amu).

Determine the empirical formula of an oxide in which mass percent of iron and oxygen are 69.9 and 30.1 respectively.

Determine the molecular formula of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 , respectively.

Determine the molecular formula of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 , respectively.

Determine the molecular formula of an oxide of iron in which the mass percent of iron and oxygen are 69.9 and 30.1 , respectively.(molecular mass is 159.8).