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Topic: balloon expansion  (Read 4340 times)

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GbPack

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balloon expansion
« on: March 19, 2006, 12:34:48 AM »
I saw an experiment in which a balloon was placed in a vaccuum, and the air surrounding the balloon was sucked out . The balloon expanded.  This is obviously because the air left, leaving room for the ballon to expand. However, i need to be able to explain it in terms of PV = nRT. Thank you.
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Offline Bakegaku

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Re:balloon expansion
« Reply #1 on: March 19, 2006, 12:38:01 AM »
Think about what the variables in PV=nRT mean.  Especially the expression PV.
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GbPack

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Re:balloon expansion
« Reply #2 on: March 19, 2006, 05:52:09 PM »
I know what the variables mean, and i thought about the relationship between the pressure and the volume,  but im afraid i still dont have a solution.  Could you explain further?
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Offline Mitch

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Re:balloon expansion
« Reply #3 on: March 19, 2006, 07:32:42 PM »
Since nRT is a contant in this experiment. As the pressure in the room was reduced there had to be an equal increase in volume to retain the nRT contsant.
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