When 6.545 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 20.54 grams of CO2 and 8.408 grams of H2O were produced.
In a separate experiment, the molar mass of the compound was found to be 70.13 g/mol. Determine the empirical formula and the molecular formula of the hydrocarbon.
Enter the elements in the order presented in the question.
empirical formula = ______
molecular formula = ______