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July 22, 2014

Homework Help: Chemistry

Posted by Forrest on Sunday, January 29, 2012 at 10:18pm.

Mass of unknown solution=25.671
Mass ethanol =8.243
Assuming that prior experiments have shown the single-step extraction removes only 72.0 % of the ethanol, the mass of ethanol in your original unknown is 11.45
Mass percent ethanol =44.6 %

Given a density of 0.789 g/mL, what would have been the volume of the ethanol in the original unknown?

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