It is based on the law of conservation of energy , which says that energy is neither created nor destroyed during a chemical reaction . I’m calorimeter , this means that the heat gained by the water in calorimeter must have been released by the sample or reaction taking place in the calorimeter .
I added a screenshot because I recently answered the same question. I hope this helps you!! :)
There’s nothing to answer
Ping pong ball - 0.0840 g
Bottle cap - 0.92 g
Marble - 2.711 g