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e solution mass i

e solution mass i

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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Need the answers for 2 and 4 please
2. Determine the solution mass if you dissolve 3.010 g of salt in 100.0 mL of water. The density of water is 1.00 g/mL. Report with correct significant figures. Show work. 3. You complete the experiment and discover that qrxn is a negative value. What does this indicate about the reaction? Given qrxn = negative value This indicates that, during the reactivity, heat energy is released. This type of reactions is known as Exothermic Reactions. 4. The following data for heat output was obtained for three exothermic salts: Salt #1: 44.6 J/¢ Salt #2: 88.5 J/¢ Salt #3: 86.9 J/¢ Which of the salts would be the best choice to use for a hot pack?
Transcribed Image Text:2. Determine the solution mass if you dissolve 3.010 g of salt in 100.0 mL of water. The density of water is 1.00 g/mL. Report with correct significant figures. Show work. 3. You complete the experiment and discover that qrxn is a negative value. What does this indicate about the reaction? Given qrxn = negative value This indicates that, during the reactivity, heat energy is released. This type of reactions is known as Exothermic Reactions. 4. The following data for heat output was obtained for three exothermic salts: Salt #1: 44.6 J/¢ Salt #2: 88.5 J/¢ Salt #3: 86.9 J/¢ Which of the salts would be the best choice to use for a hot pack?
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