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21. A student dissolves 30.46 g of silver nitrate, AgNO3, in water to make 500 mL of solution. What is the molar concentration of the solution? 22. What volume of 0.25 mol/L. solution can be made using 14 g of sodium hydroxide, NaOH? 23. A 100 ml. bottle of skin lotion contains a number of solutes. One of these solutes is zinc oxide, ZnO. The concentration of zinc oxide in the skin lotion is 0.915 mol/L. What mass of zinc oxide is present in the bottle? 24. Formalin is an aqueous solution of formaldehyde, HCHO, used to preserve biological specimens. What mass of formaldehyde is needed to prepare 1.5 L of formalin with a concentration of 10 mol/L?

21. A student dissolves 30.46 g of silver nitrate, AgNO3, in water to make 500 mL of solution. What is the molar concentration of the solution? 22. What volume of 0.25 mol/L. solution can be made using 14 g of sodium hydroxide, NaOH? 23. A 100 ml. bottle of skin lotion contains a number of solutes. One of these solutes is zinc oxide, ZnO. The concentration of zinc oxide in the skin lotion is 0.915 mol/L. What mass of zinc oxide is present in the bottle? 24. Formalin is an aqueous solution of formaldehyde, HCHO, used to preserve biological specimens. What mass of formaldehyde is needed to prepare 1.5 L of formalin with a concentration of 10 mol/L?

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 student dissolves 30.46 g of silver nitrate, AgNO3, in water to make 500 mL of solution. What is the molar concentration of the solution? 22. What volume of 0.25 mol/L. solution can be made using 14 g of sodium hydroxide, NaOH? 23. A 100 ml. bottle of skin lotion contains a number of solutes. One of these solutes is zinc oxide, ZnO. The concentration of zinc oxide in the skin lotion is 0.915 mol/L. What mass of zinc oxide is present in the bottle? 24. Formalin is an aqueous solution of formaldehyde, HCHO, used to preserve biological specimens. What mass of formaldehyde is needed to prepare 1.5 L of formalin with a concentration of 10 mol/L?
Transcribed Image Text:21. A student dissolves 30.46 g of silver nitrate, AgNO3, in water to make 500 mL of solution. What is the molar concentration of the solution? 22. What volume of 0.25 mol/L. solution can be made using 14 g of sodium hydroxide, NaOH? 23. A 100 ml. bottle of skin lotion contains a number of solutes. One of these solutes is zinc oxide, ZnO. The concentration of zinc oxide in the skin lotion is 0.915 mol/L. What mass of zinc oxide is present in the bottle? 24. Formalin is an aqueous solution of formaldehyde, HCHO, used to preserve biological specimens. What mass of formaldehyde is needed to prepare 1.5 L of formalin with a concentration of 10 mol/L?
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