Liquid hexane enters a combustion chamber at 31C, 200 kPa, at the rate 1 kmol/s 200% theoretical

Question:

Liquid hexane enters a combustion chamber at 31°C, 200 kPa, at the rate 1 kmol/s 200% theoretical air enters separately at 500 K, 200 kPa, and the combustion products exit at 1000 K, 200 kPa. The specific heat of ideal gas hexane is Cp = 143 kJ/kmol K. Calculate the rate of irreversibility of the process.