Answer:
An insulated container that measures temperature change is a calorimeter. It is used to calculate change in enthalpy (which is ΔH.)
Step-by-step explanation:
Enthalpy characterize a system from the energy point of view and it depends on the changes in the temperature of the system, the pressure (which is held constant) and the volume of the system (you know this because is an isolated system. Using a calorimeter is a key step in calculating the enthalpy, let's say for a chemical reaction.