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A Solution Is Made by Mixing 138

Question 13

Multiple Choice

A solution is made by mixing 138.2 grams of ethanol, C2H6O, (46.069 g mol-1) ; 103.6 grams of water (18.015 g mol-1) , and 80.11 grams of methanol, CH4O, (32.042 g mol-1) . What is the mole fraction of methanol in the mixture?


A) 0.02504
B) 0.2222
C) 0.2493
D) 0.3333
E) 0.4490

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