Fifty (50) mol·s⁻¹ of enriched air (50 mol-% N₂, 50 mol-% O₂) are produced by continuously combining air (79 mol-% N₂, 21 mol-% O₂) with a stream of pure oxygen.

All streams are at the constant conditions T = 25°C and P = 1.2(atm). There are no moving parts.
(a) Determine the rates of air and oxygen (mol·s⁻¹).
(b) What is the rate of heat transfer for the process?
(c) What is the rate of entropy generation S_G (W·K⁻¹)?
State all assumptions.