A 5cm diameter naphthalene ball is placed in a stagnant air at 40C and latm. Bulk concentration of naphthalene in air is negligible. The diffusivity of naphthalene in air is 6 x 10-6m/s. Vapor pressure of naphthalene at 40C is 0.15atm. Density of naphthalene is 1.0g/cm3, Molecular weight of naphthalene is 128g/mol. At 40C, viscosity of air Hair = 1.8 x 10-6kg/m - s; density of air pair = 1.123kg/m?. 1. Determine: 1. Rate of loss of naphthalene from the surface of the ball initially in mol/s in the stagnant air; = 2. Rate of loss of naphthalene from the surface of the ball in mol/s if the air starts to blow across the naphthalene ball at 5.6m/s? 3. If the air starts to blow at 5.6m/s, how long does it take for the naphthalene ball to decrease from 5cm to 2.9cm in diameter