A stream of pure nitrogen gas at 120C and pressure of 790 mmHg is fed to an evaporation chamber along with a 65 mL/min stream of liquid acetone that is 15C. The acetone completely vaporizes in the evaporator and combines with the nitrogen. The combined acetone/nitrogen stream leaves at a temperature of 55 o C and is 45% saturated with acetone. The process operates at 790 mmHg. Determine the inlet flow rate of nitrogen in L/min.