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.

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.

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

What is the simplest formula of the compound which has the following percentage composition - Carbon 80%. Hydrogen 20% ? If the molecular mass is 30, calculate its molecular formula.

Cortiosone is a molecular substance containing 21 atoms of carbon per molecules. The mass percentage of carbon in cortisone is 69.98% . Its molar mass is:

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).