Please just answer 2.12. 2.9 is provided for reference.

2.9b. Mass transfer from a flat plate A 1-m square thin plate of solid naphthalene is oriented parallel to a stream of air flowing at 20m/s. The air is at 330K and 101.3kPa. The naphthalene remains at 290K; at this temperature the vapor pressure of naphthalene is 26Pa. Estimate the moles of naphthalene lost from the plate per hour, if the end effects can be ignored. 2.12b. Evaporation of a drop of water falling in air ter. Repeat Example 2.9 for a drop of water which is originally 2mm in diame