Joanna Wesley
New member
A 3.86 gram sample of acid gives 5.80 grams of carbon dioxide and 1.57 grams of water on combustion. What is the percentage composition of each element in this compound (the mass percent of each element) ? The acid contains only carbon, hydrogen, and oxygen. Combustion means that the acid reacts with the oxygen to yield carbon dioxide and water. (CxHyOz + O2 ---> CO2 + H2O)