If on heating liquid through 80°C , mass expelled is (1/100)^{th} of mass still remaining, coeff

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10-1.Thermometry, Thermal Expansion and Calorimetry

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If on heating liquid through $80°C$, the mass expelled is $(1/100)^{th}$ of mass still remaining, the coefficient of apparent expansion of liquid is

A

$1.25 \times 10^{-4}{°C^{-1}}$

B

$12.5 \times 10^{-4}{°C^{-1}}$

C

$1.25 \times 10^{-5}{°C^{-1}}$

D

None of these

Solution

(a) ${\gamma _{{\rm{app}}{\rm{.}}}} = \frac{{{\rm{Mass expelled}}}}{{{\rm{Mass remained}} \times {\rm{ }}\Delta T}}$

$ = \frac{{x/100}}{{x \times 80}} = \frac{1}{{8000}} = 1.25 \times {10^{ – 4}}{°C^{-1}}$

Standard 11

Physics

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