Question

Calculate the amount of heat required to increase the temperature of 4 kg of water from 23 0C to 30 0C. (cw = 4180J/kg/ 0C)

Answer 1

We can find the amount of heat required to increase the temperature of 4 kg of water from $23 ^{\circ}C$ to $30 ^{\circ}C$ from the formula:

$$Q=mc\Delta T,$$

Q=4\ kg\cdot4180\ \dfrac{J}{kg\cdot\! ^{\circ}C}\cdot(30\ ^{\circ}C-23\ ^{\circ}C)=117040\ J.

Answer:

$Q=117040\ J.$