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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 HCI is needed to make 3000g of 3% solution? (MW: H=lg/mol, Cl=35g/mol) A. 0.09 gram B. 90 grams C. 0.1 gram D. 10 grams

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 HCI is needed to make 3000g of 3% solution? (MW: H=lg/mol, Cl=35g/mol) A. 0.09 gram B. 90 grams C. 0.1 gram D. 10 grams

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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Answer no. 18-19
H20 was removed? (MW: K-39g/mol, C-35g/mol, H-1g/mol, 0-16g/mol) A. 1.03 L B. 0.47 L C. 1968.75 mL D. 4.68.75 mL 17. Suppose that 15M of NaCl solution with a volume of 15L is heated and loses 2000ml of its be the final concentration of your NaCI sample? (MW: Na=23g/mol, Cl-35g/mol, H=1g/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 HCI is needed to make 3000g of 3% solution? (MW: H=lg/mol, Cl=35g/mol) A. 0.09 gram B. 90 grams C. 0.1 gram D. 10 grams
Transcribed Image Text:H20 was removed? (MW: K-39g/mol, C-35g/mol, H-1g/mol, 0-16g/mol) A. 1.03 L B. 0.47 L C. 1968.75 mL D. 4.68.75 mL 17. Suppose that 15M of NaCl solution with a volume of 15L is heated and loses 2000ml of its be the final concentration of your NaCI sample? (MW: Na=23g/mol, Cl-35g/mol, H=1g/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 HCI is needed to make 3000g of 3% solution? (MW: H=lg/mol, Cl=35g/mol) A. 0.09 gram B. 90 grams C. 0.1 gram D. 10 grams
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