The osmotic pressure of a fraction of polyvinyl nchloride, Ask an Expert

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The osmotic pressure of a fraction of poly(vinyl nchloride) in a ketone solvent was measured at 25°C. The density of the solvent (which is virtually equal to the density of the solution) was 0.798 g cm^-3. Calculate the molar mass and the osmotic virial coefficient, B, of the fraction from the following data:

c/(g /10²cm³)	0.200	0.400	0.600	0.088	1.000
h/cm	0.48	1.2	1.86	2.76	3.88

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