answer step 1, and step 2 please

Methane (CH4) at 298 K, 1 atm enters a furnace operating at steady state and burns completely with 1.8% of theoretical air entering at 400 K, 1 atm. The products of combustion exit at 500 K, 1 atm. The flow rate of the methane is 1.2 kg/min. Kinetic and potential energy effects are negligible and air can be modeled as 21% O2 and 79% N2 on a molar basis. Step 1 Determine the dew point temperature of the products, in K. Tip = K Save for Later Attempts: 0 of 3 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above