Answer:
4Al2O3 + 9Fe --> 3Fe3O4 + 8Al
Explanation:
Al:8 Al:8
O:12 O:12
Fe:9 Fe:9
just make sure that both sides have the same ammount. I started with Iron, balenced it to 3, then made sure i had 12 oxygen on both sides, being that i had 3 iron on the left and 9 on the right so i went back and fixed that. I then saw that i had 8 Al on the left and 1 on the right so i balenced that
The two-step mechanism is:
slow
fast
The overall reaction is the sum of the two reactions:
Now you can cancel the the terms that appear in both sideds:
The fact that one reaction and the other is fast does not change the product. It does change the spped (rate) of reaction, but that is a different point.
Answer:
the reaction was that it turned green. because it used to be brown but because the rain and carbon dioxide affected it.