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1 July, 15:25

A balloon is filled with 5 moles of helium gas. At a pressure of 1.18 atm and a temperature of 303 K, what volume will the gas occupy?

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  1. 1 July, 15:40
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    Ideal gas law: p·V = n·R·T.

    p - pressure of gas; p = 1,18 atm · 101,325 kPa/atm = 119,56 kPa.

    V - volume of gas.

    n - amount of substance, n (He) = 5 mol.

    R - universal gas constant; R = 8,314 J/K·mol.

    T - temperature of gas; T (He) = 303 K.

    From formula of ideal gas law: V = n·R·T / p.

    V (He) = 5 mol · 8,314 J/K·mol · 303 K : 119,56 kPa.

    V (He) = 105,35 dm³ = 105,35 L.
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