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17 May, 18:07

8.89 L of hydrogen gas is collected at 38.8 °C. Find the volume the gas will occupy at - 39.9 °C if the pressure remains constant.

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  1. 17 May, 18:20
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    Charle's Law states: V/T = k

    where k is a constant

    We can get this from the ideal gas law when pressure, and number of moles are held constant.

    We can also use this and say

    V₁/T₁ = k = V₂/K₂

    V₁/T₁ = V₂/K₂

    38.8°C = 311.95 K

    -39.9°C = 233.25 K

    8.89L/311.95K = V₂/233.25K

    V₂ = 6.65 L

    The gas will have a volume of 6.65 L at - 39.9°C.
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