A gaseous fuel mixture that is 40 percent propane (C3HS) and 60 percent methane (CHA) by volume is burned at the rate of 3.75 kg/h with 50 percent excess air in a combustion chamber. Both the fuel and air enter the combustion chamber at 25 C and 100 kPa and undergo complete combustion process. Combustion products leave the combustion chamber at 125 C. Determine (a) the balance combustion equation, (b) the air fuel ratio, (c) the mass of CO2 formed per unit mass of the fuel and (d) the rate of heat produced