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40 You perform a static light scattering experiment (using laser wavelength 532 nm) on a sample of polystyrene in toluene (1. = 1.49). The data
40 You perform a static light scattering experiment (using laser wavelength 532 nm) on a sample of polystyrene in toluene (1. = 1.49). The data Hc/ARe (in mol/g) for three different concentrations were collected (see Blackboard for data in excel sheet): Concentration (g/ml) Angle 2.18E-04 6.54E-04 9.24E-04 5.54E-06 6.07E-06 6.55E-06 50 5.84E-06 6.30E-06 6.75E-06 60 5.88E-06 6.30E-06 6.75E-06 70 5.90E-06 6.42E-06 6.87E-06 80 6.05E-06 6.53E-06 7.02E-06 5.94E-06 6.63E-06 7.11E-06 100 6.15E-06 6.74E-06 7.16E-06 110 6.38E-06 6.83E-06 7.31E-06 120 6.51E-06 7.01E-06 7.44E-06 130 6.68E-06 7.16E-06 7.58E-06 Using Excel or other software plot these data to determine the equations for Hc/ARe as a function of c at @= 0 and for Hc/ARe as a function of at e=0. From the slopes and intercepts of these equations, determine the molecular weight, radius of gyration, and 244 virial coefficient. Write out your calculations to show your work. 90 40 You perform a static light scattering experiment (using laser wavelength 532 nm) on a sample of polystyrene in toluene (1. = 1.49). The data Hc/ARe (in mol/g) for three different concentrations were collected (see Blackboard for data in excel sheet): Concentration (g/ml) Angle 2.18E-04 6.54E-04 9.24E-04 5.54E-06 6.07E-06 6.55E-06 50 5.84E-06 6.30E-06 6.75E-06 60 5.88E-06 6.30E-06 6.75E-06 70 5.90E-06 6.42E-06 6.87E-06 80 6.05E-06 6.53E-06 7.02E-06 5.94E-06 6.63E-06 7.11E-06 100 6.15E-06 6.74E-06 7.16E-06 110 6.38E-06 6.83E-06 7.31E-06 120 6.51E-06 7.01E-06 7.44E-06 130 6.68E-06 7.16E-06 7.58E-06 Using Excel or other software plot these data to determine the equations for Hc/ARe as a function of c at @= 0 and for Hc/ARe as a function of at e=0. From the slopes and intercepts of these equations, determine the molecular weight, radius of gyration, and 244 virial coefficient. Write out your calculations to show your work. 90
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