What can be known about this situation? Chemicals A and B form an endothermic reaction, and chemicals C and D form an exothermic reaction. Chemicals A and B form an exothermic reaction, and chemicals C and D form an endothermic reaction. Chemicals A and C form an endothermic reaction, and chemicals B and D form an exothermic reaction. Chemicals A and B form an exothermic reaction, and chemicals B and D form an endothermic reaction.

Respuesta :

Answer:

A.

Explanation:

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Answer:Chemicals A and B form an endothermic reaction, and chemicals C and D form an exothermic reaction

Explanation:

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