PV = nRT
Where P is pressure, V is volume, n is number of moles, R is gas constant, T is temperature
M = moles of solute / liters of solution
pH = -log[H+]
ΔG = ΔH - TΔS
Where ΔG is Gibbs free energy, ΔH is enthalpy change, T is temperature, ΔS is entropy change
A = εbc
Where A is absorbance, ε is molar attenuation coefficient, b is path length, c is concentration