Dilute solution viscosity data for poly$($methyl methacrylate$)$ in a solvent as a function of concentration is accurately described by the following equation:

$=0\mathrm{.}90+1\mathrm{.}2C+1\mathrm{.}6C^2$

Where viscosity, $,$ is in centipoise and concentration, $C,$ is in $\frac{g}{d}L.$ The Mark$-$Houwink$-$Sakurada parameters for this system are $a=0\mathrm{.}62$ and $K^{\text{'}}=4\mathrm{.}13{10}^{-4}(d\frac{L}{g}{)}^{***}(mo\frac{l}{g}{)}^a.$ What is $\frac{?}{\text{b}\text{a}\text{r}}(M{)}_v$ for this polymer?

$1$