An antifreeze solution is prepared from 222.6 g of ethylene glycol $(C_2H_6O_2$) and 200 g of water. Calculate the molality of the solution. If the density of the solution is $1.072 g mL^{–1}$, then what shall be the molarity of the solution?

Question

$\begin{array}{1 1}17.95molkg^{-1},9.11molL^{-1}\\27.95molkg^{-1},8.11molL^{-1}\\47.95molkg^{-1},7.11molL^{-1}\\77.95molkg^{-1},4.11molL^{-1}\end{array}$