Naphthalene is commonly used as a repellent against moths to protect clothing during stora...

Naphthalene is commonly used as a repellent against moths to protect clothing during storage. Consider a 1.5-cm- diameter spherical naphthalene ball hanging in a closet at 25 °C and 1 atm. Considering the Variation of diameter with time, determine how long it will take for the naphthalene to Sublimate completely. The density and vapor pressure of naphthalene at 25 °C are 1100 kg/m3 and 11 Pa, respectively, and the mass diffusivity of naphthalene in air at 25°C is DAB = 0.61 × 10–5 m2/s. Answer: 103 days