A mixture of ideal gases flowing at 50 kg/min is compressed from 100 kPa and 20 8

Question:

A mixture of ideal gases flowing at 50 kg/min is compressed from 100 kPa and 20 8 C to 600 kPa in an insulated compressor. Determine the minimum horsepower requirement if the gravimetric analysis of the mixture is:
a) 80% N2 and 20% O2
b) 20% N2 and 80% O2
c) 60% N2, 30% O2, and 10% CO2
d) 40% N2, 30% O2, and 30% CO2