130.Solving a chemistry problem
17. Calculate the molecular weight of polyvinyl acetate in acetone, using the data of the viscometric method:
The concentration of solution C, kg / m 3 1,0 3,0 5,0 7,0
The specific viscosity η beats 0,14 0,465 0,84 1,3
Constants of the Mark – Houvink equation: K = 4.2⋅10 –5, α = 0.86.
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