@property<EOL><INDENT>def alphags(self):<DEDENT>
return [i.alphag for i in self.Chemicals]<EOL>
r'''Pure component thermal diffusivities of the chemicals in the
        mixture in the gas phase at the current temperature and pressure, in
        units of [m^2/s].

        .. math::
            \alpha = \frac{k}{\rho Cp}

        Examples
        --------
        >>> Mixture(['benzene', 'hexane'], ws=[0.5, 0.5], T=320).alphags
        [3.3028044028118324e-06, 2.4412958544059014e-06]