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4 April, 02:02

A sample of gas has a volume of 25L at a pressure of 200 kPa and a temperature of 25°C. What would be the volume if the pressure were increased to 250 kPa and the temperature were decreased to 0°C?

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  1. 4 April, 02:32
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    18 L

    Explanation:

    Use ideal gas law:

    PV = nRT

    Find initial number of moles, but first convert to units that match the gas constant units.

    (200,000 Pa) (0.025 m³) = n (8.314 Pa m³ / mol / K) (25 + 273.15 K)

    n = 2.017 mol

    At the new pressure and temperature:

    (250,000 Pa) V = (2.017 mol) (8.314 Pa m³ / mol / K) (0 + 273.15 K)

    V = 0.018 m³

    V = 18 L
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