Question

give reason :
A : A gas completely fills the vessel in which it is kept.
B : A gas exerts pressure on the walls of the container.

Answer 1

HEY MATE_______

★ A gas fills its container completely because due to its high kinetic energy and negligible force of attraction the particles of gases are moving with high speed with all direction.

★A gas exerts pressure on the walls of the container because of high kinetic energy and negligible forces of attraction, the particles of gases are movE's with high speed in all direction. when the fast moving gas particles hit the walls of the container they exerts pressure.

HOPE IT HELPS ☺☺✌

Answer 2

The particles of a gas have high kinetic energy and they move in all possible directions independent of each other because there exist practically no forces of attraction between them.

So , that is why a gas fills completely The vessel in which it is kept.