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Why helium leaks out of a balloon?

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Anonymous

14y ago
Updated: 8/17/2019

The latex balloon and to a lesser extent mylar, also, is actually porous and has tiny tiny spaces between the latex molecules. The molecules do not fit together with no space between them, and the helium molecules are so small that they are able to fit between the molecules of the balloon and float out and away.

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Wiki User

14y ago

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