Air with a high volume at atmospheric pressure and 300 K is flowing parallel to a naphthalene plate with a length of L=0.3 m. The velocity of air is 0.65 m/s. At 300 K vapor pressure of naphthalene is 68 Pa and the diffusion coefficient of naphthalene-air binary system is 6.31x10-6 m2/s. Calculate the mass transfer coefficient kG and molar flux of evaporated naphthalene