An equimolar mixture of oxygen and nitrogen enters a compressor operating at steady state at 10 bar, 220 K with a mass flow rate (m⋅) of 1 kg/s. The mixture exits the compressor at 60 bar, 400 K with no significant change in KE or PE. The heat transfer from the compressor can be neglected. Using the RG model (Kay's rule), determine (a) the external power (Wext) and (b) the rate of entropy production (Sgen). (c) What-if Scenario: What would the required power be if the ideal gas mixture model were used?