Use combustion analysis to determine empirical and molecular formulas (hydrocarbons). When 3.341 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 10.48 grams of CO2. and 4.292 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 28.05g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon. Enter the elements in the order presented in the question. empirical formula = molecuiar formula =