82. Solving a chemistry problem
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82. Solving a chemistry problem
4. Determine the molar mass of the polystyrene fraction using the following data on the osmotic pressure of its solution in methyl ethyl ketone at 25.0 °C:
s, g/l 2.49 4.21 5.56 7.76
π, Pa 85.3 150 199.1 290.3
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