3. Determine the molecular weight of polystyrene in toluene using experimental data from the light scattering method:
concentration, kg/m3 1.11 1.45 1.88 2.43 2.87
turbidity*108, m-1 3.68 4.47 5.55 6.5 7.13
Debye constant 0.117*10-12.

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