Question

Define molar specific heat . why gasses have two molar specific heats.​

Answer 1

Explanation:

The molar heat capacity of a chemical substance is the amount of energy that must be added, in the form of heat, to one mole of the substance in order to cause an increase of one unit in its temperature. ... The SI unit of specific heat is joule per kelvin per mole, J⋅K−1⋅mol−1.

Gases have two specific heats because one of them refers to a change in internal energy in a system at a fixed volume. The other specific heat applies to changes in the system energy in a constant pressure scenario. ... therefore, when the volume held constant we get the heat capacity at constant volume(Cv).