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?.

Question

Physics

Sean York

6 February, 04:06

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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Answers (1)

Know the Answer?

Davin Monroe · Answer 1

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