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September 1, 2015

Homework Help: college chem

Posted by josh on Tuesday, March 9, 2010 at 11:11pm.

. Jack Daniels Tennessee whiskey is 40.00% ethanol by volume. However, % alcohol by mass is quite different from % by volume. The molality of ethanol in an aqueous solution that is 40.00 % ethanol by volume is 10.88 molal.
A) Find the % ethanol by MASS, based on the molality. The MM of ethanol, C2H5OH is 46 g.
B. Find the mole fraction of alcohol in the 10.88 molal ethanol solution.
C. The solution has a density of 0.948 g/mL. Find the molarity of the solution.

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