$200\;cm^3$ of an aqueous solution contains $1.26 \;g$ a polymer. The osmotic pressure of such solution at $300\;k$ is found to be mass of the polymer.

Question

$\begin{array}{1 1} 6.1038\;g\;mol^{-1} \\ 61.038\;g\;mol^{-1} \\ 610.38\;g\;mol^{-1} \\ 61038\;g\;mol^{-1} \end{array}$