Mass transfer experiments have been conducted on a naphthalene cylinder of 18.4-mm diameter and 88.9-mm length subjected to a cross flow of air in a low-speed wind tunnel. After exposure for 39 min to the airstream at a temperature of 26°C and a velocity of 12 m/s, it was determined that the cylinder mass decreased by 0.35 g. The barometric pressure was recorded at 750.6 mm Hg. The saturation pressure P_sat of naphthalene vapor in equilibrium with solid naphthalene is given by the relation P_sat = P x 10E, where E = 8.67 - (3766/1), with T (K) and P (bar) being the temperature and pressure of air. Naphthalene has a molecular weight of 128.16 kg/kmol.

(a) Determine the convection mass transfer coefficient from the experimental observations.

(b) Compare this result with an estimate from an appropriate correlation for the prescribed flow conditions.