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 per cent of iron and oxygen are 69.9 and 30.1 respectively. Given that the molar mass of the oxide is 159.8 g mol^(-1) .

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

What is the molecular formula of an oxide of iron in which the mass per cent of iron and oxygen are 69.9 and 30.1 respectively and its molecular mass is 160. *

Choose the molecular formula of an oxide of iron in which the mass per cent of iron and oxygen are 69.9 and 30.1 respectively and its molecular mass is 160.

The molecular formula of the oxide of iron in which mass percentage of iron is 69.9

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

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