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

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.