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    D3nch's Avatar
    D3nch Posts: 1, Reputation: 1
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    #1

    Mar 23, 2012, 12:27 AM
    If you live in a tent whose inside volume is 203 m3 and the temperature in a cold mo
    If you live in a tent whose inside volume is 203 m3 and the temperature in a cold morning is 15.o degree C but becomes 20.0 degees C in the afternonn due to the sun's warming, how many cubic meter of air was forced out of the tent due to the sun's warming . Assume that the pressure in the tent remains constant.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Mar 23, 2012, 08:03 AM
    Ideal gas law:

    PV = nRT

    Here P and V are constant, and R is a constant, so you have



    Rearrange to get . This is the ratio of the number of moles of air in the tent before and after. Then = the fraction of air that was forced out. Multiply this by the tent volume to get the number of cubic meters for air that was forced out.

    Post back with your answer and we'll check it for you.
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