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25 November, 16:08

A sample of argon gas is at a pressure of 122 atm and a temperature of 24 degrees Celsius in a rigid 25 L tank. How many moles of argon does this tank contain?

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  1. 25 November, 19:34
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    The answer to your question is n = 125.2 moles

    Explanation:

    Data

    Pressure = P = 122 atm

    Temperature = T = 24°C

    Volume = V = 25 L

    moles = n = ?

    Ideal gas constant = R = 0.082 atm L / mol°K

    Process

    1. - Convert temperature to °K

    Temperature = 24 + 273 = 297°K

    2. - Use the ideal gas equation to solve this problem

    PV = nRT

    -Solve for n

    n = PV / RT

    -Substitution

    n = (122 x 25) / (0.082 x 297)

    -Simplification

    n = 3050 / 24.354

    -Result

    n = 125.2 moles
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