One measure of the amount of water in the atmosphere is the relative humidity, the ratio of

Question:

One measure of the amount of water in the atmosphere is the relative humidity, the ratio of the actual partial pressure of water vapor to the maximum possible partial pressure of water. If the partial pressure of water vapor exceeds the vapor pressure (Figure 17-35) at that temperature, the vapor condenses to liquid and either fog or dew begins to form. In that case the relative humidity would be 100%. Referring to Figure 17-35, if the partial pressure of water in the atmosphere is 1.7 kPa when the air temperature is 25 °C, what is the relative humidity?
Figure 17-35,