Answer:
As the volume of a contained gas decreases, its pressure concentration of particles will increase
Step-by-step 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