tentukan fraksi mol etanol (mr=40 gram/mol ) falm larutan ektanol 40℅ meter (diketahui mr air =18 gram/mol?

diket
massa etanol: 40 gram
massa air: 60 gram

n etanol
=40/40 mol
=1 mol

n air
=60/18 mol
=3,33 mol

x etanol
=1/1+3,33
=1/4,33
=0.230

x air
=3,33/1+3.33
=3,33/4,33
=0,769

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