What determines the amount of pressure a gas exerts? The density of the container. The altitude of the gas. The type of gas particles. The speed and number of collisions between gas particles.

The amount of pressure a gas exerts is determined by the speed and number of collisions between gas particles. Gas pressure is a result of gas particles colliding with the walls of their container. The more frequent and forceful these collisions are, the higher the pressure. This is influenced by factors such as temperature (which affects the speed of the particles) and the number of particles in a given volume.