@property<EOL><INDENT>def k(self):<DEDENT>
return phase_select_property(phase=self.phase, s=None, l=self.kl, g=self.kg)<EOL>
r'''Thermal conductivity of the mixture at its current phase,
        temperature, and pressure in units of [W/m/K].
        Available only if single phase.

        Examples
        --------
        >>> Mixture(['ethanol'], ws=[1], T=300).kl
        0.16313594741877802