7.31 Combustion of gaseous methane with dry air is shown as: ) CH4(g) + 3(02 + 3.76 N2) + CO2(g) + 2H2O(g) +O2(e) + 3(3.76)N2(0) Assuming the air entered at reference temperature of Te = 298.16 K and pressure of 1 bar, calculate the (a) fuel-to-air ratio, f (b) equivalence ratio, (c) adiabatic flame temperature, Taf, in K Use the chemical properties shown in the box. = = A; Ichap) = -74,873 kJ/kmol A; \u202 = -241,827 kJ/kmol = -393,522 kJ/kmol = 54.31 kJ/kmol K poz = 34.88 kJ/kmol K = 32.7 kJ/kmol K phao = 41.22 kJ/kmol K AT 100 2(g) pco, CpN2 = . c