Question

How many "big c" calories does it take to raise the temperature of 2.00 l of water from 22.0 c to 40.0 c?

Answer 1

given that

mass of water = 2 L = 2000 gram

now we can use

heat required to raise the temperature

`Q = mC\Delta T`

C = 1 cal/g C

`\Delta T = 40 - 22 = 18`

now from above formula

`Q = 2000* 1 * 18`

`Q = 36000 Cal`

so above is the heat required to raise the temperature