code: def Cpgm(self):
          r'''Gas-phase heat capacity of the mixture at its current temperature
          and composition, in units of [J/mol/K]. For calculation of this property
          at other temperatures or compositions, or specifying manually the
          method used to calculate it, and more - see the object oriented
          interface :obj:`thermo.heat_capacity.HeatCapacityGasMixture`; each
          Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['oxygen', 'nitrogen'], ws=[.4, .6], T=350, P=1E6).Cpgm
          29.361044582498046
          '''
          return self.HeatCapacityGasMixture(self.T, self.P, self.zs, self.wsf Cpgm(self):
          r'''Gas-phase heat capacity of the mixture at its current temperature
          and composition, in units of [J/mol/K]. For calculation of this property
          at other temperatures or compositions, or specifying manually the
          method used to calculate it, and more - see the object oriented
          interface :obj:`thermo.heat_capacity.HeatCapacityGasMixture`; each
          Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['oxygen', 'nitrogen'], ws=[.4, .6], T=350, P=1E6).Cpgm
          29.361044582498046
          '''
          return self.HeatCapacityGasMixture(self.T, self.P, self.zs, self.ws)
docs: r'''Gas-phase heat capacity of the mixture at its current temperature
          and composition, in units of [J/mol/K]. For calculation of this property
          at other temperatures or compositions, or specifying manually the
          method used to calculate it, and more - see the object oriented
          interface :obj:`thermo.heat_capacity.HeatCapacityGasMixture`; each
          Mixture instance creates one to actually perform the calculations.
  
          Examples
          --------
          >>> Mixture(['oxygen', 'nitrogen'], ws=[.4, .6], T=350, P=1E6).Cpgm
          29.361044582498046