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    Cecilia Terrie's Avatar
    Cecilia Terrie Posts: 1, Reputation: 1
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    #1

    Jun 13, 2009, 05:53 PM
    Gas Laws
    At 525 mm Hg and 85 degrees Celsius, the volume of a sample of nitrogen gas is 26.8 liters. What is the volume at STP?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Jun 14, 2009, 12:18 AM

    Assuming that Nitrogen acts like an ideal gas, you use the formula



    You have pressure P, volume V, R is a constant, and you have T. Convert them to pascals, m^3 and in Kelvin for pressure, volume and temperature respectively. Find the number of moles n, then use again the formula to find the volume of nitrogen at STP conditions, that is 100kPa of pressure and 298 K temperature.
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