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

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the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.

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