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8 July, 10:31

A steel tank with a volume of 2.15 L contains N2 gas under a pressure of 8.91 atm at 5.81°C. Calculate the number of moles of N2 in the tank.

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  1. 8 July, 10:42
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    The answer to your question is n = 0.838 moles

    Explanation:

    Data

    Volume = 2.15 l

    Pressure = 8.91 atm

    Temperature = 5.81°C

    moles = ?

    Gas constant = 0.082 atm l / mol°K

    Process

    1. - Convert temperature to °K

    Temperature = 5.81 + 273 = 278.81°K

    2. - Write the Ideal gas formula

    PV = nRT

    -Solve for moles (n)

    n = PV / RT

    3. - Substitution

    n = (8.91 x 2.15) / (0.082 x 278.81)

    4. - Simplification

    n = 19.16 / 22.86

    5. - Result

    n = 0.838 moles
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