A very useful model, the Laliberte-Cooper (LC) model, for predicting densities for electrolyte mixtures has been previously reported that scales with mass fraction or molal electrolyte concentrations (Laliberte, M.; Cooper, W. E. Model for Calculating the Density of Aqueous Electrolyte Solutions. J. Chem. Eng. Data 2004, 49, 1141-51). This model proves, to be very useful in predicting densities of even very complex mixtures such as high level waste liquids at the Hanford Site. Moreover, a straightforward rescaling of the LC model results in a much more intuitive basis. As a result, this rescaled LC (RLC) model reveals much insight into the free energy changes associated with electrolyte specific volumes. Moreover the introduction of an additional parameter for total cation scaling extends the RLC to molar concentrations.