A natural gas with the molar analysis 94.4% CH4, 3.4% C2H6, 0.6% C3H8, 0.5% C4H10, 1.1% N2burns completely with 20% excess air in a reactor operating at steady state. If

the molar flow rate of the fuel is 0.1 kmol/h, determine the molar flow rate of the air, in kmol/h.