Ethene, C2H4, and propane, C3H8, in a 1; 1 mole ratio as gases are burned with 120% theoretical air in a gas turbine. Fuel is added at 77 F, 150 lbf/in 2 and the air comes from the atmosphere, 77 F, 15 lbf/in 2 through a compressor to 150 lbf/in 2 and mixed with the fuel. The turbine work is such that the exit temperature is 1500 R with an exit pressure of 14.7 lbf/in 2. Find the mixture temperature before combustion, and also the work, assuming an adiabatic turbine.