rate of deflation in helium balloons

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paul.fr

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rate of deflation in helium balloons
« on: 03/08/2007 16:40:41 »
Why does a balloon filled with Helium go down faster than a balloon inflated with your mouth?

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Offline Soul Surfer

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rate of deflation in helium balloons
« Reply #1 on: 12/08/2007 10:09:03 »
Helium molecules are very small and can diffuse through the rubber skin of a balloon or escape through any leaks much faster than the much larger nitrogen and oxygen molecules in the air.
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paul.fr

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rate of deflation in helium balloons
« Reply #2 on: 12/08/2007 11:01:24 »
Thank you, Ian. I thought this was going to end up in the elephant's graveyard.