A gas is found to be 85.7% carbon and 14.3% hydrogen by mass its molecular mass was found to be 98.1 g per mole using the method of this experiment what is the molecular formula of this gas

A gas is found to be 85.7% carbon and 14.3% hydrogen by mass its molecular mass was found to be 98.1 g per mole using the method of this experiment what is the molecular formula of this gas