At 27⁰C, a solution containing 2.5 g of solute in 250.0 mL of solution exerts an osmotic pressure of 400 Pa. The molar mass of the solute is $\_\_\_\_\_$$x \times {10}^1$$\mathrm{g}{\mathrm{mol}}^{-1}$ (Given: $\left.R=0.083L\text{ bar }{K}^{-1}{\mathrm{mol}}^{-1}\right)$  What is the   X  value?