How is the volume of a gas related to its concentration of particles?
As the volume of a contained gas expands, its pressure concentration of
particles will increase.
As the volume of a contained gas extends, its pressure concentration of
particles will increase.
As the volume of a contained gas decreases, its pressure concentration of
particles will increase.
As the volume of a contained gas compresses, its pressure concentration of
particles will decrease.
Air is nrimarily composed of nitrogen and oxygen gases. Which state of these elements can con

As the volume of a contained gas decreases, its pressure concentration of  particles will increase

Explanation:

According to Boyle's law:

"For a constant mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

pV = const.

where

p is the pressure of the gas

V is the volume of the gas

This means that as the volume of the gas increases, the pressure decreases, and vice-versa.

This is because when the volume of the gas is decreased (gas is compressed), the spacing between the molecules and the walls of the container decreases; as a result, the molecules will have more frequent collisions with the walls of the container, therefore they will exert on average a greater pressure, and so the pressure of the gas will be higher.

So the correct answer is

As the volume of a contained gas decreases, its pressure concentration of  particles will increase