Question

An inflated ballon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the ballon is airtight. And after a week all the air has escaped from the ballon. Explain how the air particles got out of the ballon.

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Answer 1

Answer:

also if the knot is wholly tight

there is some gap left and as you matter has space between it

so there are micro holes on the surface.

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Answer 2

Answer:

The air inside the balloon constantly exerts a pressure on the thin, stretched walls of the balloon and keeps on diffusing out gradually through it.

Explanation: