def rhol_STP(self):
        r'''Liquid-phase mass density of the mixture at 298.15 K and 101.325 kPa,
        and the current composition in units of [kg/m^3].

        Examples
        --------
        >>> Mixture(['cyclobutane'], ws=[1]).rhol_STP
        688.9851989526821
        '''
        Vml = self.Vml_STP
        if Vml:
            return Vm_to_rho(Vml, self.MW)
        return None
def rhol_STP(self):
        r'''Liquid-phase mass density of the mixture at 298.15 K and 101.325 kPa,
        and the current composition in units of [kg/m^3].

        Examples
        --------
        >>> Mixture(['cyclobutane'], ws=[1]).rhol_STP
        688.9851989526821
        '''
        Vml = self.Vml_STP
        if Vml:
            return Vm_to_rho(Vml, self.MW)
        return None
def rhol_STP ( self ) : Vml = self . Vml_STP if Vml : return Vm_to_rho ( Vml , self . MW ) return None
r'''Liquid-phase mass density of the mixture at 298.15 K and 101.325 kPa,
        and the current composition in units of [kg/m^3].

        Examples
        --------
        >>> Mixture(['cyclobutane'], ws=[1]).rhol_STP
        688.9851989526821
r Liquid - phase mass density of the mixture at 298 . 15 K and 101 . 325 kPa and the current composition in units of [ kg / m^3 ] .