(a) The equilibrium vapor pressure of water at 20°C is 2330 Pa. What is the vapor pressure of water in the air at 20°C if the relative humidity is 42%? (Relative humidity is the percentage of the equilibrium water vapor pressure in the air.)
(b) Use note 13 for Chapter 2 at the end of the book to find the air density (g/mL, not g/L) under the conditions of part (a) if the barometric pressure is 94.0 kPa.
(c) What is the true mass of water in part (b) if the mass in air is 1.000 0 g?