It is desired to design a packed tower for continuously absorbing nh3 from air by a countercurrent water flow in an absorption tower using the following data: l' #41 = .05 0.000512 201bmol of air ht ft2 ; vol . flow rate= 108,000 ft3 of gas entering at 27°c and 1 atm hr equilibrium relationship: y=0.8 x ; kya-10 ibrnol nh3 per (hr-ft*) 19.2 lbmol nha (hr ft3) calculate: a. mass flow rate of entering gas in lbmol/hr b. mass flow rate of nh3-free air entering in lbmol /hr c. xi concentration of ammonia in the leaving water stream d. l'㎜ e. diameter of tower and superficial velocity of gas flow. f. height of packed section