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Cu(s) + 0.5 0; (g) --> CuO (s) DH - -275 kJ CuO(s) + Cu (s) --> Cu,O (s) DH = +64 kJ Calculate DH for the reaction 2Cu,0 (s) + O; (g) 4CUO (s) O -678 kJ +211 kJ -211 kJ -339 kJ +678 kJ O Question 25 If a system absorbs 58 kJ of heat and has 125 kJ of work done on it, what is the DE? O 129 kJ +183 kJ O -67 kJ -183 kJ 67 kJ

Cu(s) + 0.5 0; (g) --> CuO (s) DH - -275 kJ CuO(s) + Cu (s) --> Cu,O (s) DH = +64 kJ Calculate DH for the reaction 2Cu,0 (s) + O; (g) 4CUO (s) O -678 kJ +211 kJ -211 kJ -339 kJ +678 kJ O Question 25 If a system absorbs 58 kJ of heat and has 125 kJ of work done on it, what is the DE? O 129 kJ +183 kJ O -67 kJ -183 kJ 67 kJ

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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just need the correct answers for these :) thank you
Given: Cu(s) + 0.5 O; (g) --> CuO (s) DH = -275 kJ CuO(s) + Cu (s) --> Cu,O (s) DH = +64 kJ Calculate DH for the reaction 2Cu,O (s) + 0, (g) -> 4Cuo (s) -678 kJ +211 kJ O -211 kJ -339 kJ +678 kJ Question 25 If a system absorbs 58 kJ of heat and has 125 kJ of work done on it, what is the DE? 129 kJ O +183 kJ -67 kJ O-183 kJ 67 kJ
Transcribed Image Text:Given: Cu(s) + 0.5 O; (g) --> CuO (s) DH = -275 kJ CuO(s) + Cu (s) --> Cu,O (s) DH = +64 kJ Calculate DH for the reaction 2Cu,O (s) + 0, (g) -> 4Cuo (s) -678 kJ +211 kJ O -211 kJ -339 kJ +678 kJ Question 25 If a system absorbs 58 kJ of heat and has 125 kJ of work done on it, what is the DE? 129 kJ O +183 kJ -67 kJ O-183 kJ 67 kJ
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