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a. Identify whether the reaction of Na(s) and Bry (() is exothermic or endothermic. Use the following enthalpies of formation: Compound Af H' (kJ/mol) Na(s) Br2 (e) NaBr(s) -361.02 exothermic O endothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. exothermic endothermic

a. Identify whether the reaction of Na(s) and Bry (() is exothermic or endothermic. Use the following enthalpies of formation: Compound Af H' (kJ/mol) Na(s) Br2 (e) NaBr(s) -361.02 exothermic O endothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. exothermic endothermic

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 5.63QE: A 0.470-g sample of magnesium reacts with 200 g dilute HCl in a coffee-cup calorimeter to form...
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Oendothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. o exothermic cendothermic d. Identify whether heating HgO(s) to form Hg(4) and O2 (g) is exothermic or endothermic. Use the following enthalpies of formation: Compound Af H" (kJ/mol) Hg(e) O2(g) HgO(s) -90.83 O exothermic endothermic Submit Answer Retry Entire Group 9 more group attempts remaining
Transcribed Image Text:Oendothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. o exothermic cendothermic d. Identify whether heating HgO(s) to form Hg(4) and O2 (g) is exothermic or endothermic. Use the following enthalpies of formation: Compound Af H" (kJ/mol) Hg(e) O2(g) HgO(s) -90.83 O exothermic endothermic Submit Answer Retry Entire Group 9 more group attempts remaining
a. Identify whether the reaction of Na(s) and Br2 (4) is exothermic or endothermic. Use the following enthalpies of formation: Compound A H (kJ/mol) Na(s) Br2 (e) NaBr(s) -361.02 exothermic O endothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. oexothermic endothermic d. Identify whether heating HgO(s) to form Hg(4) and
Transcribed Image Text:a. Identify whether the reaction of Na(s) and Br2 (4) is exothermic or endothermic. Use the following enthalpies of formation: Compound A H (kJ/mol) Na(s) Br2 (e) NaBr(s) -361.02 exothermic O endothermic b. Identify whether cooling and condensing gaseous He to form liquid He is exothermic or endothermic. exothermic endothermic c. Identify whether cooling a soft drink from 25 °C to 0 °C is exothermic or endothermic. oexothermic endothermic d. Identify whether heating HgO(s) to form Hg(4) and
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