The kilocalorie per mole is a derived unit of energy per Avogadro's number of particles. It is the quotient of a kilocalorie (1000 thermochemical gram calories) and a mole, mainly used in the United States. In SI units, it is equal to $4.184 kJ/mol$, or $6.9477 \times 10 J per molecule$. At room temperature it is equal to 1.688 . Physical quantities measured in $kcal\cdot mol$ are usually thermodynamical quantities; mostly free energies such as: Heat of vaporization Heat of fusion .
Kilocalorie per Mole