Methane and oxygen mixture at 40° c is fed into the combustion chamber at a flow rate of 26.5 kg/h. the mass fraction of methane in the mixture is 0.2 and all the methane is burnt. the molecular weight of methane is 16 kg/kmol. the reaction is exothermic with -5000 kj/mol enthalpy of reaction. taking 25°c as the reference temperature and assume zero enthalpy at the reference point, calculate the temperature of the gas stream leaving the combustion chamber thermal properties: of the gas stream entering the combustion chamber: 2200 kj/kg. k co of the gas stream leaving the combustion chamber: 1800 kj/kg. k