Answer:

Explanation:
We are given the mass and change in temperature, so we must use this formula for heat energy:

The mass is 73 grams. Water's specific heat is 4.18 J/g × °C. Let's calculate the change in temperature
- ΔT= final temperature - initial temperature
- ΔT= 43 °C - 30°C
- ΔT= 13 °C
Now we know all the variables and can substitute them into the formula.


Multiply the first numbers together. The grams will cancel.

Multiply again. This time, the degrees Celsius cancel.

<u>39,668.2 Joules</u> of heat energy are absorbed.