Question

give scientific reason: gaseous substance experts , pressure on the walls of the container

Answer 1

The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wallThe pressure exerted by the gasis due to the sum of all these collision forces.The more particles that hit the walls, the higher the pressure.

Answer 2

Because gas can spread all over the space and tried to further spread and hence exerts pressure on the walls of the container.
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