code: def kg(self):
          r'''Thermal conductivity of the mixture in the gas phase at its current
          temperature, pressure, and composition in units of [Pa*s].
  
          For calculation of this property at other temperatures and pressures,
          or specifying manually the method used to calculate it, and more - see
          the object oriented interface
          :obj:`thermo.thermal_conductivity.ThermalConductivityGasMixture`;
          each Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['water'], ws=[1], T=500).kg
          0.036035173297862676
          '''
          return self.ThermalConductivityGasMixture(self.T, self.P, self.zs, self.wsf kg(self):
          r'''Thermal conductivity of the mixture in the gas phase at its current
          temperature, pressure, and composition in units of [Pa*s].
  
          For calculation of this property at other temperatures and pressures,
          or specifying manually the method used to calculate it, and more - see
          the object oriented interface
          :obj:`thermo.thermal_conductivity.ThermalConductivityGasMixture`;
          each Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['water'], ws=[1], T=500).kg
          0.036035173297862676
          '''
          return self.ThermalConductivityGasMixture(self.T, self.P, self.zs, self.ws)
docs: r'''Thermal conductivity of the mixture in the gas phase at its current
          temperature, pressure, and composition in units of [Pa*s].
  
          For calculation of this property at other temperatures and pressures,
          or specifying manually the method used to calculate it, and more - see
          the object oriented interface
          :obj:`thermo.thermal_conductivity.ThermalConductivityGasMixture`;
          each Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['water'], ws=[1], T=500).kg
          0.036035173297862676