Question

Why does a gas fills the vessel completely in which it is kept

Answer 1

Answer:

because the force of attraction between the gaseous particles is very negligible so the gaseous particles moves here and there in random motion and without any resist

Answer 2

Answer:

We all know that gases have more intermolecular spaces in between them because of strong forces of attraction than other states of matter.

The kinetic energy of particle's of gases is high, they can move anywhere freely. So when we keep gas in any vessel it completely filled the vessel, as the particles move in the whole vessel and completes the space.

So, we now know that why A gas fills completely the vessel in which it is kept

Explanation: