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e solution mass i

e solution mass i

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 5.64QE: Dissolving 6.00 g CaCl2 in 300 mL of water causes the temperature of the solution to increase by...
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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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