@property<EOL><INDENT>def similarity_variables(self):<DEDENT>
return [i.similarity_variable for i in self.Chemicals]<EOL>
r'''Similarity variables for all chemicals in the mixture, see 
        :obj:`thermo.elements.similarity_variable` for the definition, [mol/g]

        Examples
        --------
        >>> Mixture(['benzene', 'toluene'], ws=[0.5, 0.5]).similarity_variables
        [0.15362587797189262, 0.16279853724428964]