The combustion chamber (burner section) is where the fuel is injected. A small amount of fuel burns with the air to release the chemical energy that provides the power to the jet engine. Assuming that the gas through the combustion chamber can be approximated by pure air and that the combustion process simply adds heat to the process at constant pressure (ignore changes in kinetic energy or mass flux), determine the amount of heat, Qcomb, needed to raise the temperature of the system from T3 = 700 K to T4 = 1300 K. Express the amount of heat in terms of kW as well as kJ/kg of air flowing through the engine.