3. If It is desired to strip 30mol% of B from water into air. Outlet flowrate of air stream is 90kgmol/hr. Inlet composition of B in air is 0.01mole%. Initially water with 18 mole % enters the multistage stripping process with a flow rate of 30kgmol/hr. BECAREFUL IT IS A STRIPPING PROCESS NOT AN ABSORPTION PROCESS! YB=2.5XB a) Determine the \# of theoretical stages by graphical approach b) Determine \# of theoretical stages by Kremser equation c) If the tray efficiency is 50% what is the actual number of stages? d) Determine the maximum air stream flowrate and compare it with the value in the