JAMB - Chemistry (2009 - No. 5)
A gas exerts pressure on its container because?
the molecules of a gas collide with the walls of the container
some of the molecules are moving faster than others
of the collisions of the molecules with each other
of the mass of the molecules of the gas
Explication
Gas pressure is the name given to the force exerted by gas particles colliding with the wall of their container.