posted by Braydon .
combustion analysis of a 285.7 mg sample of a hydrocarbon produces 880.8 mg of CO2 ans 405.7 mg of H2O.
What is the empirical formula of the compound?
a rough measurement of the molecular weight indicates it is a little over 100mg/mol. what is the molecular formula of the compound?
I don't know how to get the answer.