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Unformatted text preview: 19. For the hypothetical reaction, the atomic weight of X is 66.6 amu. 3X 2 (g) > 2X 3 (g) H = 333 kJ Find H for the conversion of 11.1 g of X 3 Gas into X 2 gas. A. +9.25 kJ B. 9.25 kJ C. +2.00 kJ D. 333 kJ E. 2.00 kJ 20. When 72 g of a metal a t 97.0C is added t o 100 g of water a t 25.0C the final temperature is found to be 29.1C. What is the heat capacity per gram of the metal? (Heat capacity of H 2 O = 4.184 J/g  C ) A. 2.8 B. 2.0 C. 4.184 D. 0.35 E. 0.46 21. Which of the following changes always results in a NEGATIVE Esys? A. the system absorbs heat and there is no work done B. the system gives off heat and does work on the surroundings C. the system absorbs heat and does work on the surroundings D. the system absorbs heat and has work done on it E. the system gives off heat and has work done on it...
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This note was uploaded on 02/18/2012 for the course CHEM 101 taught by Professor Williamson during the Fall '08 term at Texas A&M.
 Fall '08
 Williamson
 Chemistry, Reaction

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