Example 2: Liquid acetone (C3H6O) is fed at a rate of 400 L/min into a heated chamber, where it evaporates with a nitrogen stream. The gas leaving the heater is diluted by another nitrogen stream flowing at a measured rate of 419 m³ (STP)/min. The combined gases are then compressed to a total pressure P = 6.3 atm gauge at a temperature of 325°C. The partial pressure of acetone in this stream is P₁ = 501 mmHg. Atmospheric pressure is 763 mmHg. 1) What is the molar composition of the stream leaving the compressor? 2) What is the volumetric flow rate of the nitrogen entering the evaporator if the temperature and the pressure of this stream are 27°C and 475 mmHg gauge?