The negative of the change in this quantity is divided by the square of the temperature in the Gibbs-Helmholtz equation.
This quantity is plotted on the y-axis of the Mollier diagram. The negative of the change in this quantity is divided by the square of the temperature in the Gibbs-Helmholtz equation. This quantity minus the product of temperature and entropy equals Gibbs free energy. Its change for an overall reaction equals the sum of the changes of each step according to Hess's law. The change in this quantity is negative in an exothermic reaction. For 10 points, name this quantity symbolized H that is equal to the internal energy of a system plus the product of pressure and volume.
This quantity is plotted on the y-axis of the Mollier diagram.
enthalpy [prompt on "H"] 