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j015
j015
24.02.2020 • 
Chemistry

A solution of methylene chloride CH2Cl2 and ethanol CH3CH2OH that is 50.% methylene chloride by mass is boiling at 60.3°C. The vapor is collected and cooled until it condenses to form a new solution. Calculate the percent by mass of methylene chloride in the new solution. Here's some data you may need: normal boiling point density vapor pressure at 60.3°C methylene chloride 40.°C 1.3gmL 1476.torr ethanol 78.°C 0.79gmL 372.torr Be sure your answer has the correct number of significant digits. Note for advanced students: you may assume the solution and vapor above it are ideal.

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