Increasing the number of molecules in a container increases the pressure because

Question

Quizplus · Accepted Answer

The pressure inside a container increases with the number of molecules primarily because there are more collisions with the walls of the container. According to the kinetic theory of gases, the pressure exerted by a gas results from the force of gas molecules colliding with the walls of the container. Increasing the number of molecules increases the frequency of these collisions, thereby increasing the pressure, assuming the volume of the container and the temperature remain constant.

Increasing the Number of Molecules in a Container Increases the Pressure