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During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and the temperature dropped. Why?
A:there was no energy input during the chemical reaction
B:energy was absorbed during the chemical reaction
C:energy was released during the chemical reaction

Respuesta :

Greenleafable
The temperature dropped because B. energy was absorbed during the chemical reaction.
If energy was released, the temperature would rise. If there was no energy input, the temperature would stay the same. Since temperature dropped, it means that energy was absorbed.