The net change in this quantity for a reaction can be calculated using Hess's Law.
The Joule-Thompson coefficient can be calculated by keeping this quantity constant and taking the partial derivative of temperature with respect to pressure. The net change in this quantity for a reaction can be calculated using Hess's Law. The change in Gibbs free energy can be calculated by subtracting the temperature times the change in entropy from the change in this quantity. At constant pressure, a reaction is exothermic when the change in this quantity is negative. For 10 points, name this thermodynamic quantity that is represented by H.
The Joule-Thompson coefficient can be calculated by keeping this quantity constant and taking the partial derivative of temperature with respect to pressure.
{enthalpy} [prompt on {H} before mentioned]