Question

A glass bottle full of mercury has a mass of 500g.On being heated through 35 Celsius, 43g of mercury are expelled . Caculate the expansivity of the bottle (cubic expansivity of mercury is 1.8×10 per K , linear expansivity of glass is 8.0×10 per K

Answer 1

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

The mass of mercury left in the bottle:

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

$$m' =500−43=457\ g$$