Question

What is the most important part of a calorimeter (what component is the same in the calorimeters in

each of the three experiments)? from this three: Specific heat of a mettal, heat of fusion of water, calorie content of foods

Answer 1

A calorimeter is an object used for calorimetry, or the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. Differential scanning calorimeters, isothermal microcalorimeters, titration calorimeters and accelerated rate calorimeters are among the most common types. A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber.

According to this, the most important part would be the heat fusion of water, basically because this value will remain the same regardless the food you are using of the metal. The specific heat of a metal may change when you use another metal in the calorimeter, same thing happen with the calorie content of foods, that may vary depending on the food.

Hope this helps