code: def Vmg_STP(self):
          r'''Gas-phase molar volume of the mixture at 298.15 K and 101.325 kPa,
          and the current composition in units of [m^3/mol].
  
          Examples
          --------
          >>> Mixture(['nitrogen'], ws=[1]).Vmg_STP
          0.02445443688838904
          '''
          return self.VolumeGasMixture(T=298.15, P=101325, zs=self.zs, ws=self.wsf Vmg_STP(self):
          r'''Gas-phase molar volume of the mixture at 298.15 K and 101.325 kPa,
          and the current composition in units of [m^3/mol].
  
          Examples
          --------
          >>> Mixture(['nitrogen'], ws=[1]).Vmg_STP
          0.02445443688838904
          '''
          return self.VolumeGasMixture(T=298.15, P=101325, zs=self.zs, ws=self.ws)
docs: r'''Gas-phase molar volume of the mixture at 298.15 K and 101.325 kPa,
          and the current composition in units of [m^3/mol].
  
          Examples
          --------
          >>> Mixture(['nitrogen'], ws=[1]).Vmg_STP
          0.02445443688838904