We have been given a task to calculate the molar mass of a solute (x polymer with mass given) from the volume of a solvent (toluene) and osmotic pressure and temperature of the solution. To me it seems impossible, because I haven't found a single way to calculate the volume of the solution (which is required to calculate consentration) with given information. Is there another way to calculate this without consentration? Am I missin something? Would exact numbers help? Plz help