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24 August, 05:57

A glass flask has a volume of 500 mL at a temperature of 20° C. The flask contains 492 mL of mercury at an equilibrium temperature of 20° C. The temperature is raised until the mercury reaches the 500 mL reference mark. The coefficients of volume expansion of mercury and glass are 18 x 10-5 / K and 2.0 x 10-5 / K respectively. The temperature at which this occurs is closest to?.

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  1. 24 August, 06:12
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    101.63° C

    Explanation:

    Volume expansivity γa = γr - γ g = 18 * 10⁻⁵ - 2.0 * 10⁻⁵ = 16 * 10⁻⁵ / K

    v₂ - v₁ / v₁θ = 16 * 10⁻⁵ / K

    (500 - 492) mL / (492 * 16 * 10⁻⁵) = θ

    θ = 101.63° C
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