In an absorption column operating at 1 atmosphere, it is desired to separate contaminant A from air. The concentration of A is 10% mol and it is desired to reduce it to 1.5% mol at the outlet of the tower. To carry out this operation, this gas will be contacted against the current with pure water. The flow of the water current will be such as to allow the liquid current to leave the tower with a concentration of 15 mol%. This column is designed to treat 500 kmol/h m2 of the gaseous mixture. Take into account that the specific area of the package is 50 m2/m3. The equilibrium between this gas and water obeys Henry's Law: pA (atm) = 05 xA. The manufacturer reports the following mass transfer coefficients for these conditions: kx = 10 kmol/h m2 (frac.mol) and ky = 8 kmol/h m2 (frac.mol). Graphically calculate the number of theoretical stages. Calculate NtG and HtG with the unsimplified integral that considers the values corresponding to the interface and equilibrium, respectively. Use the Kremser Brown Souders Eq. to calculate the number of theoretical stages. Calculate the height of the packed tower.