Which of the following equations is a combustion reaction?
A) MgO + HCl MgCl2 + H2O
B) Al + Fe2O3 Al2O3 + Fe
C) KClO3 KCl + O2
D) CH4 + O2 CO2 + H2O
Question 2
In the formula for ammonium nitrate, the number of nitrogen atoms is
A) one.
B) two.
C) three.
D) four.