The amount of ethyl alcohol ( C_2 H_5 OH ) that should be added to 1 kg of water so that the solution does not freeze at -4^° F ( K_f =1.86 K kg…

The amount of ethyl alcohol $\displaystyle \left(\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right)$ that should be added to $\displaystyle 1$ kg of water so that the solution does not freeze at $\displaystyle -4^{\circ} \mathrm{F}\left(\mathrm{K}_{\mathrm{f}}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right)$ in g is \_\_\_\_. (Nearest integer) (Given Atomic mass $\displaystyle \mathrm{C}=12.0, \mathrm{H}=1.0, \mathrm{O}=16.0 \mathrm{u}$ )