The mole fraction of glucose C6H12O6 in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is ___________.

m. f. of glucose =moles   of   glucosemoles   of  glucose+moles  of  H2O0.1=110=11+9So glucose moles = 1, (h glucose)        hH2O=9 W glucose =1×180grm           WH2O=9×18 grmas  Mass % of H2O=ωH2O×100ωH2O+ωglucose=9×18×100(9×18)+180  =162×100342=47.368