18. The reaction: is and therefore heat isby the reaction A. exothermic, release

Question

18. The reaction: is and therefore heat isby the reaction A. exothermic, released B. endothermic, released C. endothermic. absorbed D. exothermic, absorbed 19. When aqueous solutions of are mixed, a precipitate forms A. Nal and KBr B. K SO, and HI C. KCI and AgNO D. KOH and Ba(NO) 20. Oxidation cannot occur without B. oxygen C. water D. air E. reduction 21. Consider the specific heats of the following metals: Specific heat g C) 0.130 0.240 0.450 0.370 0.890 Metal Ni AI 500J of heat is applied to 25.0 g of each metal, initially at 25 C. Which metal will have the highest final temperature? A. Au B. Ag C. Ni D. Ga E. A A proton released by an acid in aqueous solution quickly reacts with water to form a hydronium ion. What product is formed when a proton reacts with ammonia (NHs)? 22. A. NH3 B. NH C. NH D. NH,

Explanation / Answer

1. is an exothermic reaction, therefore, energy is released.

2. KCl and AgNO3

3. reduction.

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