3. For which of the following statements is correct for the reaction 2NO2(g)→H2(g)+202(g)+66.4kJ A. exothermic, potential energy greater in reactants B. exothermic, potential energy greater in products C. endothermic, potential energy greater in products D. endothermic, potential energy less in reactants E. endothermic, potential energy less in products

3. For which of the following statements is correct for the reaction 2NO2(g)→H2(g)+202(g)+66.4kJ A. exothermic, potential energy greater in reactants B. exothermic, potential energy greater in products C. endothermic, potential energy greater in products D. endothermic, potential energy less in reactants E. endothermic, potential energy less in products

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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Copper has been used for thousands of years, either as a pure metal or in alloys. It is frequently used today in the production of wires and cables. Copper can be obtained through smelting or recycling. Determine the energy associated with each of these processes in order to recycle 1.40 mol Cu. The smelting of copper occurs by the balanced chemical equation: CuO(s) +CO(g) → Cu(s) +CO,(g) where AHtCuo is = - 155 kJ/mol. Assume the process of recycling copper is simplified to just the melting of the solid Cu starting at 25°C. The melting point of Cu is 1084.5°C with AH®fus = 13.0 kJ/mol and a molar heat capacity, CPCU = 24.5 J/mol:°C.
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3. In the following reaction, energy is given off. Where does the energy go? 2 C(s) + O₂(g) = 2 CO(g) a. To the reactants b. To the products c. To the system d. To the surroundings
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The reaction below is a exothermic or endothermic reaction. 2SO3(g) + Heat ⇋ 2SO2(g) + O2(g)
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