A 2 feet diameter packed tower packed with 1-inch ceramic Raschig rings, with a gas to liquid mass flow ratio of 1, is treating a gas stream containing 1.5 % ammonia (volume basis). The outlet ammonia concentration shall not exceed 0.1 % by volume to meet the EPA requirements at the exit gas stream of the tower. The tower is working at 100 F and 1 atmosphere and the gas stream is at 100F and 1 atm. The height of transfer unit based on overall gas film coefficients is 1.85. The slope of the equilibrium line is 1.3 Steps used to grade your answer are: a) Determine the gas flow rate the packed tower could treat, to meet the emission requirements. (5) b) Determine the height of the packed tower. Show all calculations including the graph (5)