Question

one form of hand warmer consists of finely divided iron powder, that when exposed to the air reacts with moisture in the air to form what is essentially rust. what can you tell about the chemical reaction that forms rust from metallic iron from what you know about hand warmers? this reaction is endothermic and has positive q this reaction is exothermic and has positive q this reaction is endothermic and has negative q this reaction is exothermic and has negative q dont test me yet, i am trying to gain an understanding before attempting to answer this question.

Explanation:

An exothermic reaction releases heat (\(q<0\)) to the surroundings. Hand - warmers generate heat, so the reaction is exothermic (\(q < 0\)).

Answer:

This reaction is exothermic and has negative \(q\)