A student observed that the temperature of water

increased when a salt was dissolved in it. The

student should conclude that dissolving the salt

caused

A.

formation of an acidic solution

B.

formation of a basic solution

C.

an exothermic reaction

D. an endothermic reaction

Which of the following warnings would an agricultural chemist tell a farmer who wants to recycle his or her own ammonia? recycling ammonia is a difficult process that sometimes takes weeks. recycling ammonia requires a degree in biochemistry or a related field. recycling ammonia can be harmful because it is highly flammable and toxic. recycling ammonia costs too much money considering the price of the necessary chemicals.