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23 August, 08:54

A balloon is filled with 0.250 mole of air at 35°C. If the volume of the balloon is 6.23 liters, what is the absolute pressure of the air in the balloon?

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  1. 23 August, 09:05
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    Answer is: the absolute pressure of the air in the balloon is 1.015 atm (102.84 kPa).

    n = 0.250 mol; amount of substance.

    V = 6.23 L; volume of the balloon.

    T = 35°C = 308.15 K; temperature.

    R = 0.08206 L·atm/mol·K, universal gas constant.

    Ideal gas law: p·V = n·R·T.

    p = n·R·T / V.

    p = 0.250 mol · 0.08206 L·atm/mol·K · 308.15 K / 6.23 L.

    p = 1.015 atm; presure of the air.
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