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30 August, 10:02

A 475 ml sample of a gas was collected at room temperature of 23.5 °C and a pressure of

756 mm Hg. Calculate the volume of the gas if the conditions were altered to 10.0 °C and a

pressure of 722 mm Hg.

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Answers (1)
  1. 30 August, 10:50
    0
    The volume when the conditions were altered is 0.5109 L or 510.9 mL

    Explanation:

    Using the general gas equation,

    P1 V1 / T1 = P2 V2 / T2

    where;

    P1 = 756 mmHg

    V1 = 475 ml = 0.475 L

    T1 = 23.5°C = 23.5 + 273K = 275.5 K

    P2 = 722 mm Hg

    T2 = 10°C = 10 + 273 K = 283 K

    V2 = ?

    Rearranging to make V2 the subject of the formula, we obtain:

    V2 = P1 V1 T2 / P2 T1

    V2 = 756 * 0.475 * 283 / 722 * 275.5

    V2 = 101, 625.3 / 198911

    V2 = 0.5109 L or 510.9 mL
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