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29 December, 21:22

A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 330 K this sample has a pressure of 150 kPa and a volume of 3.5 L. What is the volume of this sample at STP

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  1. 29 December, 21:30
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    The volume of gas at STP is 4.3 L.

    Explanation:

    Given dа ta:

    initial temperature of gas = 330 K

    Initial pressure = 150 Kpa (150/101.325 = 1.4804 atm)

    Initial volume = 3.5 L

    New pressure = 1 atm

    New temperature = 273.15 K

    New volume = ?

    Formula

    P₁V₁ / T₁ = P₂V₂ / T₂

    Solution:

    V₂ = P₁V₁. T₂ / T₁. P₂

    V₂ = 1.4804 atm. 3.5 L. 273.15 K / 330 K. 1 atm

    V₂ = 1415.3 L / 330

    V₂ = 4.3 L

    The volume of gas at STP is 4.3 L.
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