A 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 3.87 g of CO 2 and 0.792 g of H 2 O as the only carbon and hydrogen containing products respectively.
Another sample of the same compound, of mass 4.14 g,yielded 2.31 g of SO 3 as the only sulfur containing product.
A third sample, of mass 5.66 g was burned under different conditions to yield 2.49 g of HNO 3 as the only nitrogen containing product. Calculate the empirical formula of the compound.