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Quiz 5 Chapter5

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Q Question 1 When a system , ?E is always negative. Question 2 Which one of the following is an exothermic process? Question 3 1 out of 1 points ?H for an endothermic process is while ?H for an exothermic process is Question 4 The reaction 4Al (s) + 3O2 (g) ? 2 Al2O3 (s) ?H° = -3351 kJ is , and therefore heat is by the reaction. Question 5 The units of specific heat are .

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1. Selected Answer: gives off heat and does work 2. Selected Answer: condensation of water vapor 3. Selected Answer: positive, negative 4. Selected Answer: exothermic, released 5. Selected Answer: J/g-K or J/g-°C