# Show that the foregoing expression satisfies the differential equations in Eq. (13.3-13). Hint:…

Show that the foregoing expression

satisfies the differential equations in Eq. (13.3-13). Hint: Differentiate this

expression with respect to time and substitute the differential equations for

[X] and [Y] into this equation.

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Show that the foregoing expression satisfies the differential equations in Eq. (13.3-13). Hint:…

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Find the number-average and mass-average

molecular masses for a sample of a polyvinyl alcohol that has equal numbers of

molecules with molecular masses 5000 amu, 10,000 amu, 15,000 amu, 20,000 amu,

25,000 amu, 30,000 amu, and 35,000 amu.