6. Solving a chemistry problem
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6. Solving a chemistry problem
3. Determine the change in the molecular weight of natural rubber in toluene after its thermal aging in a thermostat at 343 K for 18 days. The following experimental data were obtained by the light scattering method:
Concentration, kg/m3 1.0 1.5 2.0 3.0
turbidity *108 m-1 before aging 3.18 3.30 3.50 3.76
turbidity *108 m-1 after aging 1.65 1.95 2.03 2.24
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