An absorption column is fed with a gas with 3mol% and leaves with a mol fraction of 0.3%. The solvent entering the top of the column is pure. The equilibrium is given by a straight line with a slope of 0.7. The total tower height is 12ft. Calculate the number and transfer units and the height of a transfer unit, as well as the remaining mole fraction, assuming (L/V) is 2.5 times the minimum.