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19 August, 12:53

400.0 mL of a gas is collected at 745.0 mm Hg. What will the volume be at standard pressure

(Std pressure = 760.0 mm Hg) ?

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Answers (1)
  1. 19 August, 13:01
    0
    392.1 mL

    Explanation:

    Ideal gas law says:

    PV = nRT

    where P is absolute pressure, V is volume, n is amount of gas in moles, R is the universal gas constant, and T is absolute temperature.

    If n, R, and T are held constant:

    P₁ V₁ = P₂ V₂

    Plugging in values:

    (745.0 mmHg) (400.0 mL) = (760.0 mmHg) V

    V = 392.1 mL
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