Combustion analysis of an unknown compound provides the following data: 73.5 grams c, 4.20 grams h, and 72.3 grams cl. what is the percent composition of each element in this compound? 73.5% c, 4.20% h, 72.3% cl 48.0% c, 3.00% h, 50.0% cl 17.5% c, 1.00% h, 17.2% cl 49.0% c, 2.80% h, 48.2% cl