a stack through which the gases flow at the rate of 7,500 kg/min. The gases are emitted at a pressure of 1 atm and a temperature of 200 oC. They have a molecular weight of 28. What is the volumetric flow rate of gases out the stack (m3/min)? Note - in these units, R has a value of 0.08206 atm-m3/kmol-K.