its a mass transfer question

AM In a wetted-wall tower, H2S is being absorbed from air into water at 1.6 bar total pressure and 25C. The gas-phase mass transfer coefficient is predicted to be 3.42 m/h. At a given point in the column, the mole fraction of the H2S in the liquid at the gas-liquid interface is 1.8 x 10-5 and that in the bulk gas is 0.15. The solubility of H2S in water at the given temperature is 0.00337 mass fraction per atmosphere pressure of the solute. Calculate the local flux