The osmotic pressure of solutions of polystyrene in toluene were measured at 25?C and the pressure was expressed in terms of the height of the solvent of density 1.004 g cm-3.
C/g dm-3 2.042 6.613 9.521 12.602
h/cm 0.592 1.910 2.750 3.600
Calculate the molar mass of the polymer (assume ideal behavior).