b. Estimate The rate of evaporation of water from the bottom of a test tube 12.5mm in diameter and 20cm long into dry atmospheric air at 25C with an ambient pressure of 101.3 kPa. You may use the Stefan's law as given below. only C needed Ans of bi DpMwA ROT (x-x) Saturation Vapor pressure at 25C is 3.2 kPa. O C. If the ambient air is fully saturated for the case stated in Q4 (b) above, what would be the rate of evaporation? Explain your answer by reference to Fick's law. ?? Please help me ) D dcd mw = PA2 PA1 In mw=18643x 10 hgls