Part A $-$ Using the definition for mole fraction.

A solution was prepared by dissolving $175\mathrm{.}0g$ of $KCl$ in $235g$ of water.

Calculate the mole fraction of $KCl.($The formula weight of $KCl$ is $74\mathrm{.}6\frac{g}{m}ol.$ The formula weight of water is $18\mathrm{.}0\frac{g}{m}ol.)$