Complete combustion of 1.00 g of a hydrocarbon yields 3.00 g of carbon dioxide. What is the empirical formula of the hydrocarbon?
CH2\text{CH}_2CH2
C2H5\text{C}_2\text{H}_5C2H5
C3H8\text{C}_3\text{H}_8C3H8
C4H9\text{C}_4\text{H}_9C4H9