Question

A piece of lead weighing 500 g gives out 1200 calories of heat when it is cooled from 100° C to 20° C. Find its specific heat.

Options

• 0.003 cal/g° C

• 0.033 cal/g° C

• 0.03 cal/g° C

• 0.3 cal/g° C

Answer 1

0.03 cal/g° C

Explanation:

`"c" = "Q"/("m" Delta"T")`

`= 1200/(500 xx (90 - 10))`

`= 0.03  "cal/g° C"`