Answer:
Because of Kinetic Theory Pastulate, gas molecules collision
Explanation:
Gases can be compressed because most of the volume of gas is an empty space according to Kinetic Molecular theory. If we compress a gas without changing its temperature, the average K.E of the gas particles remains the same. There is no change in the speed of gas molecule with which the particles moving a container, but the container is smaller. So particles travel from one side of the container to the other in a very small period of time. So it means that they strike the walls mostly. Any increase in the frequency of collisions with the walls must bring an increase in the pressure of the gas. from Boyle's law, the pressure of a gas becomes larger as the volume of the gas becomes smaller have opposite relation
