If an atom suffers from a collision, that causes an electron to jump from a lower to higher state, it is called collisional excitation
Use a magnet to separate the iron from the sand.
I think the answer is 2Mg + H2O4 = Cu12O4 + 2H
I’m really not sure though so it might be wrong… I’m not the best at balancing equations lol
Answer:3.6 x 101 or 8.77 x 10-1