Jawabanmu

2014-08-19T12:19:16+07:00
Massa etanol 46% = 46 gram etanol
massa air = 100% - 46% = 54% = 54 gram air.

m= g/mr x 1000/p = 46/46 x 1000/54
                           = 1 x 18,518
                           = 1 x 18,52 = 18, 52 molal.
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