Assuming complete combustion determine the composition of exhaust gases on mass basis.

Question

Propane (C₃ H₈) is used as a fuel in an engine with 30% excess air. Assuming complete combustion determine the composition of exhaust gases on mass basis. Atomic weights are C = 12, O = 16, N = 14, H = 1. Molar ratio of nitrogen to oxygen is 3.76.