906. Calculate the molar mass of ethyl cellulose in aniline using the experimental data of the viscometric method (KMH= 6.9*10-5l/g, α = 0.72 constants):
Solution concentration, g/l 1.0 1.75 2.5 3.25 4.0
Specific viscosity of the solution 0.24 0.525 0.875 1.35 1.84

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