Chapter 31, Problem 1RAT

To determine

The correct option for the statement “Air that contains the maximum amount of water vapor for the temperature of the air mass is considered to”.

Answer to Problem 1RAT

The correct option for the statement “Air that contains the maximum amount of water vapor for the temperature of the air mass is considered to” is option (d).

Explanation of Solution

The air's capacity to store water depends on its temperature. A given amount of air at $20°C$ holds the twice the amount of water holds by the air at $10°C$.

When the air holds its maximum amount of water, then it is said to be saturated and it has a relative humidity of $100\%$. The saturated air, when warmed upholds more amount of water, so changing the external condition affects the saturated ability of the air.

The evaporation rate is similar to the condensation at its saturation equilibrium level. The relative humidity of saturated air near the Earth changes because of changing external conditions, such as temperature, air density, pressure and other factors.

Conclusion:

Therefore, the correct option for the statement “Air that contains the maximum amount of water vapor for the temperature of the air mass is considered to” is option (d).