K Sato, F R Eirich, and J E Mark (J Polymer Sci , Polym Phys 14, 619 (1976)) have reported the data in the table below for the osmotic pressures of polychloroprene ( 1 25 g cm 3 ) in toluene ( 0 858 g cm 3 ) at 30C Determine the molar mass of polychloroprene and its second osmotic virial coefficient c (mg cm ) II (N m) 1 33 30 2 10 51 4 52 132 7 18 246 9 87 390

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Question: K. Sato, F.R. Eirich, and J.E. Mark (J. Polymer Sci., Polym. Phys. 14, 619 (1976)) have reported the data in the table below for the

K. Sato, F.R. Eirich, and J.E. Mark (J. Polymer Sci., Polym. Phys. 14, 619 (1976)) have reported the data in the table below for the osmotic pressures of polychloroprene (ρ = 1.25 g cm⁻³) in toluene (ρ = 0.858 g cm⁻³) at 30°C. Determine the molar mass of polychloroprene and its second osmotic virial coefficient.

c/(mg cm-) II/(N m) 1.33 30 2.10 51 4.52 132 7.18 246

c/(mg cm-) II/(N m) 1.33 30 2.10 51 4.52 132 7.18 246 9.87 390

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