阿摩線上測驗
19. A 100-mL sample of water is placed in a coffee cup calorimeter. When 1.0 g of an ionic solid is added, the temperature decreases from 21.5℃ to 20.8℃ as the solid dissolves. Which of the following is true for the dissolving of the solid?
(A) AH ＜O
(B) 
(C) 
(D) 
(E) none of these
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統計： A(3), B(1), C(8), D(1), E(4) #2735507
統計： A(3), B(1), C(8), D(1), E(4) #2735507
