A dead man was found to have an unknown liquid in his blood. This chemical was identified to be 52.143% carbon, 13.128% hydrogen and 34.730% Oxygen. What was the empirical formula?

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?