Answer: C.
This is because the atoms on either side of the equation in all the other solutions are not equal.
The main chemicals in air pollution that create acid rain are sulfur dioxide (SO2) and nitrogen (NOx). Acid rain usually forms high in the clouds where sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants. this mixture forms a mild solution of sulfuric acid and nitric acid
2Mg+O₂⇒2MgO
It can be a combustion reaction, or it can be a combination reaction
Answer:
5 degrees required for ice