A 0.410 mol n-butane/mol, 0.590 mol propane/mol mixture at 25°C enters a furnace. In a separate stream, air enters the furnace in 10.0% excess at 171.0°C. The fuel reacts completely. Calculate the adiabatic flame temperature by following the steps below. Take 100 mol of fuel as the basis. Assume the heat capacity for O2 is 3.31 à 10-2 kJ/(mol·°C), N2 is 3.13 à 10-2 kJ/(mol·°C), H2O is 3.85 à 10-2 kJ/(mol·°C), and CO2 is 5.00 à 10-2 kJ/(mol·°C).

What is N2, the moles of air entering the furnace?