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2.) D 3.) B 4.) D
2) A 5.00-g sample of copper metal at 25.0°C is heated by the addition of 133 J of energy. The final temperature of the coppe
2) A 5.00-g sample of copper metal at 25.0°C is heated by the addition of 133 J of energy. The final temperature of the copper is °C. The specific heat capacity of copper is 0.38 J/g-K. A) 45.0 B) 25.0 C) 70.0 D) 95.0 E) 35.1 250 3) The value of AE for a system that performs 151 kJ of work on its surroundings and loses 79 kJ of heat is_ kl A) -72 B) -230. C) +72 D) -151 E) +230 4) The value of AH® for the reaction below is -126 kJ. The amount of heat that is released by the reaction of 10.0 g of Na202 with water is__ kJ 2Na2O2 (s) + 2H20 (1) 4NaOH (s) + O2 (8) A) 32.3 B) 67.5 C) -126 D) 8.08 E) 16.2
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