Karim brings a chair from the backyard into his house and is going to stack it on top of another chair. Both chairs are the same size and have the same number of molecules. The diagram above shows the chairs before they touch. Use the information in the diagram to answer the question. How does the temperature of the bottom chair compare with the temperature of the top chair before the chairs touch? What will happen after the chairs have been touching for a while?

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a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

the answer is d.) potassium