106. Solving a chemistry problem
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106. Solving a chemistry problem
85. Determine the molar mass of polymethyl methacrylate using the following data from the viscometric method:
Solution concentration Cm, kg/m3 1.0 1.2 1.4 1.6 1.8 2.0
Reduced solution viscosity
polymer in benzene ηsp/s 0.408 0.416 0.430 0.434 0.442 0.452
Constants: K = 4.7 * 10-8; α = 0.77
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