Balanced chemical equation:
3 O2 + 4 Fe = 2 Fe2O3
hope this helps!.
The answer should be (D) endothermic reaction.
Reason : - Reactions in which energy is absorbed are called endothermic reactions. In your provided question, 150 kcal energy is being <u>absorbed</u>, and thus, we can say that it is an endothermic reaction.
The spoon should be connected to the negative terminal of the battery. The other electrode should be made of silver.
They work together to form an organ.