Answer to Question #91215 in Physics for george

Question

A glass bottle full of mercury has a mass of 500g being heated through 35 degree celsius. 12.43 g of mercury was expelled. Calculate the mass of mercury left in the bottle (cubic expansivity of mercury 1.8 X 10^-4, linear expansivity of glass is 8.0 X10^-6)

Answer 1

$$\Delta m=m-m'$$

The mass of mercury left in the bottle:

$$m'=m-\Delta m$$

$$m'=500-12.43=487.57\ g$$