67. Solving a chemistry problem
2. Calculate the molecular weight of polyvinyl chloride if the following values of the reduced osmotic pressure are obtained for its solutions in dichloroethane at 20°C:
C, g/100 cm3 0.10 0.20 0.40 0.45
π0/С, atm•cm3•g-1 0.36 0.38 0.39 0.41
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