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12 February, 04:30

a sample of gas at 62 degrees C occupies a volume of 4.80 L at a pressure of 2.90 atm. how many moles of gas are comtained in the sample?

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  1. 12 February, 04:53
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    Answer: 5.08 moles

    Explanation:

    Given that:

    Volume of gas V = 4.80L

    (since 1 liter = 1dm3

    4.80L = 4.80dm3)

    Temperature T = 62°C

    Convert Celsius to Kelvin

    (62°C + 273 = 335K)

    Pressure P = 2.9 atm

    Number of moles of gas N = ?

    Note that Molar gas constant R is a constant with a value of 0.0082 ATM dm3 K-1 mol-1

    Then, apply ideal gas equation

    pV = nRT

    2.9atm x 4.8dm3 = n x (0.0082 atm dm3 K-1 mol-1 x 335K)

    13.92 atm dm3 = nx 2.747 atm dm3 mol-1

    n = 13.92/2.747

    n = 5.08 moles

    Thus, there are 5.08 moles of gas comtained in the sample
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