Question

Will the volume of a fixed amount of a gas increase, decrease, or remain unchanged with a decrease in pressure coupled with an increase in temperature?

1) The volume of a gas will increase.
2) The volume of a gas will decrease.
3) The volume of a gas will remain unchanged.

Answer 1

The volume of a fixed amount of gas will increase with a decrease in pressure coupled with an increase in temperature.

Step-by-step explanation:

The volume of a fixed amount of gas will increase with a decrease in pressure when coupled with an increase in temperature. This is because when the temperature of a gas increases, the average speed and kinetic energy of the gas molecules also increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and forceful collisions with the walls of the container, causing an increase in pressure. However, if the pressure is decreased at the same time, the gas expands and the volume increases.