Question

using the proper units for energy
which is the metric standard for measuring energy?
which unit is used for specific heat capacity?
if you wanted to compare the abilities of different substances to store thermal energy, which unit would you use?

Explanation:

The metric standard for measuring energy is the joule. Calories are also a unit of energy but are not the metric - standard. The unit J/g°C is for specific heat capacity, which is a different physical quantity related to how much energy is needed to raise the temperature of a unit mass of a substance by 1 degree Celsius.

Answer:

joules