The first one is exothermic because energy is a reactant, the second formula is endothermic
<span>it tells you the sequence in which events occurred, not how long ago they occurred.</span>
Answer:Minerals form when rocks are heated enough that atoms of different elements can move around and join into different molecules. Minerals are deposited from salty water solutions on Earth's surface and underground
Explanation:
Fe needs to have a positive charge of +3 to balance out -3 Cl
