A glass flask whose volume is 1000.00 cm3 at 0.0C is completely filled with merc

Question

A glass flask whose volume is 1000.00 cm3 at 0.0C is completely filled with mercury at this temperature. When flask and mercury are warmed to 56.0 C, 8.80 cm3 of mercury overflow.

If the coefficient of volume expansion of mercury is 18.0 × 105 K1, compute the coefficient of volume expansion of the glass.

A glass flask whose volume is 1000.00 cm3 at 0.0C is completely filled with mercury at this temperature. When flask and mercury are warmed to 56.0 C, 8.80 cm3 of mercury overflow.

If the coefficient of volume expansion of mercury is 18.0 × 105 K1, compute the coefficient of volume expansion of the glass.

Explanation / Answer

coefficient of apparent expansion is gamma_a = change in volume /original volume*raise in temparature

gamma_a = 8.8/(1000*(56-0)) = 15.7*10^-5 /C

gamma_R = 18*10^-5 /C

then gamma_g = gamma_R-gamma_a

coefficient of volume expansion of glass is gamma_g = 18*10^-5 - 15.7*10^-5 = 2.3*10^-5 /C

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