Mass transfer takes place from spherical naphthalene with a radius of 7 mm to the surrounding still air. The sphere is in a large volume of still air at 54 C and 1 atm absolute pressure. The vapor pressure of naphthalene at 54 oC is 1.114 mmHg. First, calculate the dispersibility of naphthalene in air using the Fuller equation and determine the evaporation rate of naphthalene at the surface as kgmol/s.m2. (MA = 128.17 kg/kgmol and MB = 18.02 kg/kgmol).