At boxing practice, Nathan works with his coach to improve the strength of his punch. Nathan notices that when the bag moves away from him, it swings upward. Then, it slows to a stop and then swings back. Nathan knows that the energy of the bag is converted to energy as the bag swings upward.

What are the blanks?

Jjj

Explanation:

Ii

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

the answer is d. none of the above