Question

give reasons (b) a gas exerts pressure on the walls of the container

Answer 1

 The Particles ingases are loosely packed and have high kinetic energy and due to this they move with a high speed in random direction due to this random motion of the particle they hit the walls of the container an thus,exert pressure.


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Answer 2

gases have very high kinetic energy and therefore they re moving in all the possible directions and they hit the walls of the container while moving..... that's why it exerts pressure on the walls of the container