During science lab, Carl notices that when he adds water to his solid sample of anhydrous copper

copper sulfate, CuSO4, his reaction vessel

becomes warm and a blue solution forms. Describe what is happening

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The dissociation of copper sulfate into ions is an exothermic chemical reaction that releases heat into the surroundings.

Explanation:

Some of the potential energy stored in the solid sample of anhydrous copper sulfate is released as heat as the sample dissolves and dissociates into ions in the water. This is due to the large lattice energy of the crystalline copper sulfate.

hope this helps

first one is the correct answer

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.