Answer:
go look for that on google
Explanation:
Your question looks a bit incomplete as you have the same contents in options a) and d). According to your list, I can't see the correct answer, but I can give you one.The difference between the potential energy of the products of the potential energy of the reactants is equal to the enthalpy of the reaction.
True, if you would like an example look at Indian arrow heads or early architecture all use rocks.
Answer:
a) Addition reaction, is your answer
