1. A 0.500g sample of a pure compound, containing only carbon and hydrogen, was combusted in a carbon-hydrogen combustion analyzer. The combustion produced 0.346g of water and 1.678 of carbon dioxide. a) Calculate the masses of carbon and hydrogen in the sample. b) Find the empirical formula of the compound. 2. An 874mg sample of cortisol was subjected to carbon-hydrogen combustion analysis. 2.23g of carbon dioxide and 0.652g of water were produced. The molar mass of cortisol was found to be 362g/mol using a mass spectrometer. If cortisol contains carbon, hydrogen, and oxygen, determine its molecular formula