16. The concentration of a 1500mL aqueous KCI solution was increased from 25.0 M to 80.0 M by evaporation. How much H2O was removed? (MW: K-39g/mol. Cl=35g/mol, H-1g/mol, O=16g/mol) A. 1.03 L B. 0.47 L C. 1968.75 mL D. 4.68.75 mL 17. Suppose that 15M of NaCI solution with a volume of 15L is heated and loses 2000ml of its water content. What would be the final concentration of your NaCl sample? (MW: Na-23g/mol, CI-35g/mol, H-1g/mol, 0=16g/mol) A. 3.75 M B. 0.0375 M C. 37.5 M D. 375.0 M 18. How much ml of ethanol is needed to make 2000ml of an aqueous 15% (v/v) solution? A. 3000 mL B. 300 mL C. 30 mL D. None of the above 19. What mass of HCl is needed to make 3000g of 3% solution? (MW: H=1g/mol. Cl%=35g/mol) A 0.09 gram B. 90 grams C 0.1 gram D. 10 grams

16. The concentration of a 1500mL aqueous KCI solution was increased from 25.0 M to 80.0 M by evaporation. How much H2O was removed? (MW: K-39g/mol. Cl=35g/mol, H-1g/mol, O=16g/mol) A. 1.03 L B. 0.47 L C. 1968.75 mL D. 4.68.75 mL 17. Suppose that 15M of NaCI solution with a volume of 15L is heated and loses 2000ml of its water content. What would be the final concentration of your NaCl sample? (MW: Na-23g/mol, CI-35g/mol, H-1g/mol, 0=16g/mol) A. 3.75 M B. 0.0375 M C. 37.5 M D. 375.0 M 18. How much ml of ethanol is needed to make 2000ml of an aqueous 15% (v/v) solution? A. 3000 mL B. 300 mL C. 30 mL D. None of the above 19. What mass of HCl is needed to make 3000g of 3% solution? (MW: H=1g/mol. Cl%=35g/mol) A 0.09 gram B. 90 grams C 0.1 gram D. 10 grams

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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