An air stream contains a contaminant at a level of 0.002 mole percent (0.2 mole fraction). the concentration in air is to be reduced to 0.00025 mole percent by contacting it with water in a countercurrent absorption column. the entering air stream flows at a rate of 100 kmol/hr into the column. water flows into the column and contains no contaminant. at the tower operating conditions, the equilibrium relationship for the solute can be described by y = 0.85*x2. a)calculate the flowrate (kmol/hr) of inert air flowing through the system; b)calculate the amount of solute (kmol/hr) transferred to the water in the process; c)the slope of the operating line is l/v. as the liquid flowrate is decreased, the operating line will pivot and will ultimately touch the equilibrium line. at that point, infinite stages