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CHM 140Zumdahl_TestBank_Ch6
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Chapter 6: Thermochemistry 1. A gas absorbs 0.0 J of heat and then performs 30.7 J of work. The change in internal energy of the gas is A) 61.4 J B) 30.7 J C) –61.4 J D) –30.7 J E) none of ... these 2. What is the kinetic energy of a 1.56-kg object moving at 94.0 km/hr? A) 5.32 102 kJ B) 6.89 103 kJ C) 5.32 10–4 kJ D) 1.06 103 kJ E) 2.04 101 kJ e 3. Which of the following statements correctly describes the signs of q and w for the following exothermic process at P = 1 atm and T = 370 K? H2O(g) H2O(l) A) q and w are negative. B) q is positive, w is negative. C) q is negative, w is positive. D) q and w are both positive. E) q and w are both zero. 4. For a particular process q = 20 kJ and w = 15 kJ. Which of the following statements is true? A) Heat flows from the system to the surroundings. B) The system does work on the surroundings. C) E = 35 kJ D) All of the above are true. E) None of the above are true. [Show More]
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