Chemistry - Concentration Terms Question with Solution | TestHub

Molecular weight of${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}=24+5+16+1=46$
Molecular mass of${\mathrm{H}}_2\mathrm{O}=18$
414g of${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}$has$\frac{414}{46}=9$mole
18g of${\mathrm{H}}_2\mathrm{O}$has$=\frac{18}{18}=1$mole
Mole fraction of water$=\frac{{\mathrm{n}}_1}{{\mathrm{n}}_1+{\mathrm{n}}_2}=\frac{1}{1+9}$