Ethylene (C2H4) enters an adiabatic combustion chamber at 25oC, 1 atm and is burned with 40% excess

Question:

Ethylene (C2H4) enters an adiabatic combustion chamber at 25oC, 1 atm and is burned with 40% excess air that enters at 25oC, 1 atm. The combustion is complete, and the products leave the combustion chamber at 1 atm. Assuming T0 = 25oC, determine
(a) The temperature (T) of the products,
(b) The entropy generation and
(c) The irreversibility.