2) Air is a mixture of N2, O2, and small amounts of other gases, and it can be approximated as 79 percent N2 and 21 percent O2 on mole basis. During a steady-flow process, air is cooled from 220 to 160 K at a constant pressure of 10 MPa. Determine the heat transfer during this process per kmol of air T₁ = 220 K P₁ = 10 MPa AIR 79% N₂ 21% O₂ Heat T₁ = 160 K P₂ = 10 MPa