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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 & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section5.5: Enthalpy Changes For Chemical Reactions
Problem 1RC: 1. For the reaction 2 Hg(l) + O2(g) → 2 HgO(s), ∆rH° = 181.6 kJ/mol-rxn. What is the enthalpy change...
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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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