A glass of milk left on top of a counter in the kitchen at 15°C, 88 kPa, and 50 percent re...

A glass of milk left on top of a counter in the kitchen at 15°C, 88 kPa, and 50 percent relative humidity is tightly sealed by a sheet of 0.009-mm-thick aluminum foil whose permeance is 2.9 × 10 –12 kg/S m2 Pa. The inner diameter of the glass is 12 cm. Assuming the air in the glass to be saturated at all times, determine how much the level of the milk in the glass will recede in 12 h. Answer: 0.00011 mm