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Liquid propane (C3H8) enters a combustion chamber at 25C at a rate of 0.07kg/min where it is mixed and burned with 25 percent excess air that enters the combustion chamber at 27C. An analysis of the combustion gases reveals that all the hydrogen in the fuel burns to H2O but only 90 percent of the carbon burns to CO2, with the remaining 10 percent forming CO. If the exit temperature of the combustion gases is 1720K, determine (a) the mass flow rate of air and (b) the rate of heat transfer from the combustion chamber