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voyager1970

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fishbait

Why do Helium baloons defalte so quickly

Why is that? are helium Molecules smaller than air or of a higher pressure than air? Also posted on seasonal wonder which brain boxes get this first.
20:34 Mon 12th Nov 20074 answers, last by floggedhorse 20:36 Fri 23rd Nov 2007

Only 1 question