A packed column is designed to absorb ammonia from a gas stream. The unit operates at 60% of the flooding gas mass velocity, the actual liquid flow rate is 25% more than the minimum, and 90% ammonia to be collected. Given the operating conditions and type of packing below, calculate the height of packing, the column diameter, and the operating pressure drop. Data includes: gas mass flow rate = 5000 lb/h; NH3 concentration in inlet gas stream = 2.0 mol%; scrubbing liquid is pure water; packing type = 1 inch Raschig rings; HOG of the column = 2.5 ft; Henrys law constant, m = 1.20; density of gas (air) = 0.075 lb/ft3 ; density of water = 62.4 lb/ft3 ; viscosity of water = 1.8 cP, 1 (ratio of liquid to water density); and F = 160 (for 1 inch Raschig rings).