2. A wetted-wall absorption tower 2.54cm inside diameter is fed with water as the wall liquid and an ammonia-air mixture as the central-core gas. At a particular level in the tower the ammonia concentration in the bulk gas is 0.80 mole fraction, that in the bulk liquid 0.05 mole fraction. The pressure is 1atm, and temperature is 26.7C. Mass-transfer coefficients are ky=1.47103kgmol/(s.m2. mole fraction), and kx =1.59103kgmol(s,m2. mole fraction). The equilibrium distribution data for ammonia at 26.7C are given below. Calculate the local mass-transfer flux, NA, for the absorption of ammonia in kgmolNH/(5. m2) and mass-transfer rate in kgNH/h, ignoring the vaporization of water (35p)