Question

How many joules of energy are required to heat 2.5 kg water from 18.5 to 55.0?

Answer 1

Specific heat of water is 4.186 J/g/C. The heat required to raise the temperature by

`\Delta T` is
`Q=ms \Delta T`

Here
`m` is mass of water being heated,
`s=4.186 J/g/C.` specific heat of water and
`\Delta T` change in temperature.

Here
`m=2.5kg=2500g,\Delta T=55-18.5=36.5`.

Heat energy required is

`image`