Solutions of several samples of polypropiolactone in trifluoroethanol (TFE) were studied viscometrically at 25 °C and the following dependence of intrinsic viscosity on molar mass was obtained:

M, kg/mol 193 167 148 126 92.4 80.0 51.4 38.8
[η], cm3/g 150 130 107 86.5 60.1 49.1 28.5 19.6

Calculate the coefficients of the Mark-Houwink equation.

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