We hear so much about “big dick energy”, but we never hear about big dick enthalpy H, defined as the sum of a system’s big dick internal energy U with the product of its big dick pressure P and big dick volume V.

We can derive the big dick entropy S as the partial derivative of the big dick Helmholtz free energy F with respect to big dick temperature T at constant big dick pressure and big dick particle number N, and the big dick chemical potential μ as the partial derivative of the big dick Helmholtz free energy with respect to big dick particle number at constant big dick temperature and big dick volume.

Each of these quantities is encoded in the system’s big dick partition function Z, expressible as a sum of exponentials of the big dick inverse temperature β multiplied by the big dick total energy E_i ranging over each possible microstate i of the system.

Now, the big dick fugacity of a gas is defined as the big dick pressure of an ideal gas with the same big dick temperature and big dick molar Gibbs free energy…