def rhol(self):
        r'''Liquid-phase mass density of the chemical at its current
        temperature and pressure, in units of [kg/m^3]. 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.volume.VolumeLiquid`; each Chemical instance
        creates one to actually perform the calculations. Note that that
        interface provides output in molar units.

        Examples
        --------
        >>> Chemical('o-xylene', T=297).rhol
        876.9946785618097
        '''
        Vml = self.Vml
        if Vml:
            return Vm_to_rho(Vml, self.MW)
        return None
def rhol(self):
        r'''Liquid-phase mass density of the chemical at its current
        temperature and pressure, in units of [kg/m^3]. 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.volume.VolumeLiquid`; each Chemical instance
        creates one to actually perform the calculations. Note that that
        interface provides output in molar units.

        Examples
        --------
        >>> Chemical('o-xylene', T=297).rhol
        876.9946785618097
        '''
        Vml = self.Vml
        if Vml:
            return Vm_to_rho(Vml, self.MW)
        return None
def rhol ( self ) : Vml = self . Vml if Vml : return Vm_to_rho ( Vml , self . MW ) return None
r'''Liquid-phase mass density of the chemical at its current
        temperature and pressure, in units of [kg/m^3]. 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.volume.VolumeLiquid`; each Chemical instance
        creates one to actually perform the calculations. Note that that
        interface provides output in molar units.

        Examples
        --------
        >>> Chemical('o-xylene', T=297).rhol
        876.9946785618097
r Liquid - phase mass density of the chemical at its current temperature and pressure in units of [ kg / m^3 ] . 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 . volume . VolumeLiquid ; each Chemical instance creates one to actually perform the calculations . Note that that interface provides output in molar units .