A tower, 15 cm in diameter, is to be used to lower the ammonia, H2S, concentration in a gas stream from 3.6 to 0.3 mol %. The gas stream is fed to the bottom at a rate of 8 mol/s and water is fed to the top of the tower at a rate of 1.5 times of the minimum flow rate required. The tower operates isothermally at 293 K and 1.013×105 Pa. The equilibrium data at 293 K are as follows: X 0 Y 0 0.021 0.0164 0.0252 0.0349 0.032 0.0445 0.0722 0.042 0.053 0.080 a) Determine (Ls/Gs)min and (Ls/Gs)actual. b) Determine the actual flow rate of liquid required to accomplish the mentioned absorption. c) How many stages are required to perform this operation?