We wish to absorb ammonia from an air stream using water at 20C and a total pressure of 1atm. The entering water stream is pure water. The entering vapor is 7mol% ammonia. We desire to recover 99% ammonia in the water outlet stream. The total gas flow rate is 93,588.4cc/min. We want to use a solvent rate that is 1.5 times the minimum solvent rate. Assume that temperature is constant at 20C, water is nonvolatile, and air does not dissolve in water. Equilibrium data are given below: Table: Partial Pressure of Ammonia over Ammonia-Water Solutions at 20C (Ref: Table 12-3, Wankat) a) Determine Lmin [5 marks ] b) Determine the amount of water needed [5 marks] c) Determine the number of theoretical stages graphically [12 marks]. d) Explain if Kremser equation to obtain N is applicable in this case [ 3 marks]