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Postby expert007 » Wed 04 May, 2011 16:53

Why does a helium-filled balloon lose pressure faster
than an air-filled balloon?
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Re: pressure

Postby little_scholar » Wed 04 May, 2011 16:55

it is because :
The atomic mass of `He` is much less than the molecular mass of the major components of air (`N_2` and `O_2`). The rate of effusion of `He` through the balloon skin is much faster.
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