combustion chamber is fed with butane and excess air. Combustion of butane is complete. The composition of combustion gases on volume basis is given below : CO2= 9.39%, H2O = 11.73%, O2= 4.70% and N2...

combustion chamber is fed with butane and excess air. Combustion of butane is complete. The composition of combustion gases on volume basis is given below : CO2= 9.39%, H2O = 11.73%, O2= 4.70% and N2 = 74.18% Find % excess air used and mole ratio of air to butane used.