The intrinsic viscosity of a sample of poly(methyl methacrylate) is 22.04 cm3g-1 in toluene at 25°C and 25.53 cm3g-1 in ethyl acetate at 20°C. Given the Mark-Houwink-Sakurada constants tabulate below, calculate the visocity-average molar mass of the poly(methyl methacrylate) sample. Solvent          Temperature/°C        K/cm3g-1 (gmol-1)-a        a Toluene.                25                              7.5x10-3                 0.72 Ethyl acetate         20                               21.1x10-3              0.64

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