Spherical napthalene ball of mass 4 gm is kept suspended in a large volume of stagnant...

Spherical napthalene ball of mass 4 gm is kept suspended in a large
volume of stagnant air at 318 K and 1 atm pressure. If the naphthalene ball gets
sublimated directly into the dry air, calculate the time required for the reduction in
the mass of ball from 4 gm to 3 gm. Derive the expression for calculation of time
required. Data: DAB = 6.92 × 10-6 m2/s, sublimation pressure of naphthalene at 318 K is 0.8654 mm Hg and density is 1140 kg/m3.

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Amanda K answered 1 month ago

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