of the solid.

$(25$ P$.)$ A solution is prepared by dissolving $26\mathrm{.}0g$ of lactose $(C_{12}{H}_{22}{O}_{11})$ in $234\mathrm{.}0g$ of water producing $250\mathrm{.}0ml$ solution at $293K.$ Calculate the expected osmotic pressure at $293K.($ C: $12\frac{g}{m}ol,H$:$1\frac{g}{m}ol$ and $O$:$16\frac{g}{m}ol).$