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3 November, 10:07

A sample of helium, occupies a volume of 462 mL at 27.0°C.

What volume will the gas occupy at 37.0 °C if pressure

remains constant?

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  1. 3 November, 13:07
    0
    This is a Charles Law problem = > V ∝ T = > direct proportionality ... that is, increasing temperature = > increasing volume and decreasing temperature = > decreasing volume. The empirical relationship comparing two sets of conditions is V₁/T₁ = V₂/T₂.

    Given

    V₁ = 462 ml T₁ = 27°C = 300K

    V₂ = ? T₂ = 37°C = 310K

    V₂ = V₁ (T₂/T₁) = 462ml (310K/300K) = 477ml (3 sig. figs.)
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