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Jumlah mol glukosa adalah
ng = massa/Mr = 18 /180 = 0,1 mol
Jumlah mol air adalah
na = 90 /18 = 5 mol
Fraksi mol (X) glukosa:
xg = ng/na+ng = 0,1/5+0,1 = 0,1/5,1 = 0,019 <--
X air :
xa = na/ng+na = 5/0,1+5 = 5/5,1 = 0,98 <--
semoga membantu :)