Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
What is the molality of a solution consisting of 9.265 mass % of C2H5OH dissolved in water?
Expert Solution
Step 1
Mass by mass % gives an idea about the amount of solute dissolved per 100 g of solution.
Here mass % of ethanol is 9.265 %.
This means:
Considering 100 g of solution,
Mass of ethanol=9.265
Mass of water=100-9.265=90.735 g
Mass of water (in kg)=90.735/1000=0.090735 kg
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