What are the changes that occur inside a helium balloon as it rises from sea level?

1 Answer
Aug 28, 2017

Answer:

That (i) the volume of the balloon INCREASES......

Explanation:

And (ii) the density of the contained gas DECREASES.......

We assume a constant temperature, and thus #P_1V_1=P_2V_2#. And since #P_2"<<"P_1#, #V_2">>"V_1# in order to compensate for the pressure drop. Since #V_2# (and #V_1#) displaces a mass of air that is greater than the mass of the balloon, the balloon rises even higher in altitude.

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