4) [6 marks] A 1,4086-gram cample of "Compound z, known to contain cartion, tivdrogen, and oxygen, was burned in excess oxyeen and the reswlting CO2 and H2O collected. a) If 2.1119 grams of CO2(44.01g/mol2 and 0.5763grams of H2O(18.015g/mol) were collected, what is the empirical formula of "Compound Z ? b) As a gas, "Compound Z has a density of 2.898g/L at 20C and 300 torr pressure. What is the molecular formula of "Compound Z