The vapor pressure is the pressure of the vaporphase of a substance when it is in equilibrium with the solid or liquid phaseof the substance. The relative humidity is the partial pressure of watervapor in the air divided by the vapor pressure of water at that same temperature,expressed as a percentage. The air is saturated when the humidityis 100%. (a) The vapor pressure of water at 20.0C is 2.34 * 10^3 Pa.If the air temperature is 20.0C and the relative humidity is 60%, what isthe partial pressure of water vapor in the atmosphere (that is, the pressuredue to water vapor alone)? (b) Under the conditions of part (a), what is themass of water in 1.00 m3 of air? (The molar mass of water is 18.0 g>mol.Assume that water vapor can be treated as an ideal gas.)

The vapor pressure is the pressure of the vaporphase of a substance when it is in equilibrium with the solid or liquid phaseof the substance. The relative humidity is the partial pressure of watervapor in the air divided by the vapor pressure of water at that same temperature,expressed as a percentage. The air is saturated when the humidityis 100%. (a) The vapor pressure of water at 20.0C is 2.34 * 10^3 Pa.If the air temperature is 20.0C and the relative humidity is 60%, what isthe partial pressure of water vapor in the atmosphere (that is, the pressuredue to water vapor alone)? (b) Under the conditions of part (a), what is themass of water in 1.00 m3 of air? (The molar mass of water is 18.0 g>mol.Assume that water vapor can be treated as an ideal gas.)