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21. A 400.0 mL solution contains 15.0 g of ethanol (C,H,O). What is the concentration (in M) of ethanol? mas ethanol = 46.0108 glmol

21. A 400.0 mL solution contains 15.0 g of ethanol (C,H,O). What is the concentration (in M) of ethanol? mas ethanol = 46.0108 glmol

Chemistry
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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21. A 400.0 mL solution contains 15.0 g of ethanol (C,H,O). What is the concentration (in M) of ethanol? mas ethanol = 46.0108 glmol
Transcribed Image Text:21. A 400.0 mL solution contains 15.0 g of ethanol (C,H,O). What is the concentration (in M) of ethanol? mas ethanol = 46.0108 glmol
SCAN Standard data rates may apply. 23. What is the concentration (by mass) of the solute in a 25 °C solution prepared by dissolving 2.50x10 mol NazPO4 in 1.000 L of water (in ppm, ppb, and ppt, all to two decimal places)? ppm; 4.10 x 10' ppb; 4.10x104 ppt (2.50x10-7) Il63.94 24. A 20.0 mL aliquot of a 0.515 M aqueous solution is added to 125 mL of pure water. What is the concentration (in M) of the new solution? A: 0.0710
Transcribed Image Text:SCAN Standard data rates may apply. 23. What is the concentration (by mass) of the solute in a 25 °C solution prepared by dissolving 2.50x10 mol NazPO4 in 1.000 L of water (in ppm, ppb, and ppt, all to two decimal places)? ppm; 4.10 x 10' ppb; 4.10x104 ppt (2.50x10-7) Il63.94 24. A 20.0 mL aliquot of a 0.515 M aqueous solution is added to 125 mL of pure water. What is the concentration (in M) of the new solution? A: 0.0710
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