code: def k(self):
          r'''Thermal conductivity of the chemical at its current phase,
          temperature, and pressure in units of [W/m/K].
  
          Utilizes the object oriented interfaces
          :obj:`thermo.thermal_conductivity.ThermalConductivityLiquid` and
          :obj:`thermo.thermal_conductivity.ThermalConductivityGas` to perform
          the actual calculation of each property.
  
          Examples
          --------
          >>> Chemical('ethanol', T=300).kl
          0.16313594741877802
          >>> Chemical('ethanol', T=400).kg
          0.026019924109310026
          '''
          return phase_select_property(phase=self.phase, s=None, l=self.kl, g=self.kgf k(self):
          r'''Thermal conductivity of the chemical at its current phase,
          temperature, and pressure in units of [W/m/K].
  
          Utilizes the object oriented interfaces
          :obj:`thermo.thermal_conductivity.ThermalConductivityLiquid` and
          :obj:`thermo.thermal_conductivity.ThermalConductivityGas` to perform
          the actual calculation of each property.
  
          Examples
          --------
          >>> Chemical('ethanol', T=300).kl
          0.16313594741877802
          >>> Chemical('ethanol', T=400).kg
          0.026019924109310026
          '''
          return phase_select_property(phase=self.phase, s=None, l=self.kl, g=self.kg)
docs: r'''Thermal conductivity of the chemical at its current phase,
          temperature, and pressure in units of [W/m/K].
  
          Utilizes the object oriented interfaces
          :obj:`thermo.thermal_conductivity.ThermalConductivityLiquid` and
          :obj:`thermo.thermal_conductivity.ThermalConductivityGas` to perform
          the actual calculation of each property.
  
          Examples
          --------
          >>> Chemical('ethanol', T=300).kl
          0.16313594741877802
          >>> Chemical('ethanol', T=400).kg
          0.026019924109310026