True or False: Wet gas expands more than dry gases.

The correct answer is true because wet gas, which contains water vapor, generally has different expansion properties compared to dry gas. When water vapor is introduced into the gas mixture, it increases the overall volume that the gas occupies when heated. This is primarily due to the added energy from water vapor in the gaseous state, which expands more than other dry gas components when subjected to heat.

In practice, the presence of water vapor changes the overall density and expansion characteristics of the gas, making wet gas expand more for a given increase in temperature than dry gases alone. The behavior of gases is further influenced by factors such as temperature and pressure, but the inherent properties of wet gases result in greater expansion compared to their dry counterparts under standard conditions.

The other options do not accurately capture the relationship between wet gas and dry gas expansion. While temperature can affect the behavior of gases, it is not a determining factor that contradicts the primary characteristic of wet gas expansion. Similarly, high altitudes do not change the fundamental nature of wet versus dry gas expansion; thus, the statement remains consistent regardless of altitude or temperature variations.