Question

Question #1d203

Answer 1

`1024.8J`

Explanation:

Heat energy absorbed or given out `Delta Q` is given by the expression

`DeltaQ=mcdot s cdot Delta t`,
where `m` is the mass, `s` specific heat of the substance and `Delta t` is the change in temperature.

Inserting given values and converting to SI system of units

`DeltaQ=(10xx36.6/1000)cdot 140 cdot (45-25)`
`=(0.366)cdot 140 cdot (20)`
`=1024.8J`