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18 August, 22:54

a helium balloon has a volume of 2.95 liters at 25 c. the volume of the ballon decreased to 2.25 l after it is placed outside on a cold day. what is the outside temperature in c?

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  1. 19 August, 01:28
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    The outside temperature is - 45.8°C

    Explanation:

    When a gas keeps on constant its moles and its pressure, we can assume that volume will be increased or decreased as the T° (absolute T° in K).

    V1 / T1 = V2 / T2

    2.95L/298K = 2.25L / T2

    (2.95L/298K). T2 = 2.25L

    T2 = 2.25L. 298K / 2.95L

    T2 = 227.2K

    T°K - 273 = T°C

    227.2K - 273 = - 45.8°C
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