4. Cowboy Oxy wants to develop a process for producing 16lbm/min of oxygen for medical applications needed for respiratory malfunctions. The required purity by FDA is 99%. Air at 62F and 14.7 psia is used as the initial raw material. A standard process used is air separation where air is compressed to 80 psig prior to removing the CO2 and water. Assume the molar composition of air to be 78%N2,21%O2 and rest other gases such as argon, CO2 and moisture. Assume an average MW of air to be 28.97. Determine (i) the cubic foot per minute (CFM) air need to be supplied and (ii) the compressor power required if the efficiency of the compressor is 86%