The osmotic pressure of a living cell is 12 atm at 300 K . The strength of sodium chloride solution that is isotonic with the living cell at this temperature is $\_\_\_\_$ $\mid \mathrm{gL}^{-1}$. (Nearest integer) Given: $\mathrm{R}=0.08 \mathrm{~L}^{\mathrm{atm}} \mathrm{K}^{-1} \mathrm{~mol}^{-1}$ Assume complete dissociation of NaCl (Given: Molar mass of Na and Cl are 23 and $35.5 \mathrm{~g} \mathrm{~mol}^{-1}$ respectively.)