Based on mole ratios. A sample is 59.53% C, 5.38%H, 10.68%N, and 24.40%O what is its empirical formula. A 0.2000 gram sample of a compound (vitamin C) composed of only C, H, and O is burned completely with excess O2 . 0.2998 g of CO2 and 0.0819 g of H2O are produced. What is the empirical formula?