Several thin sheets of naphthalene, 0.25 cm thick and 10 cm2square, are arranged parallel to each other with their centers at 1 cm intervals. air at 273 k and 1.013 x 105 pa enters this sandwich arrangement with a bulk velocity of 15 m/s. at 273 k, the mass diffusivity for naphthalene in air is 5.14 x 10-6 m/s, the schmidt number is 2.57, and the vapor pressure of naphthalene is 1.0 pa. determine the concentration of naphthalene in the air as it leaves the arrangement, evaluating the mass-transfer coefficient using the a) reynolds analogy: b) von karman analogy; c) chilton-colburn analogy