Em tham khảo nha:
\(\begin{array}{l}
4P + 5{O_2} \to 2{P_2}{O_5}\\
F{e_3}{O_4} + {H_2} \to 3Fe + 4{H_2}O\\
2Al + 6HCl \to 2AlC{l_3} + 3{H_2}\\
3Mg + 2Fe{(N{O_3})_3} \to 3Mg{(N{O_3})_2} + 2Fe\\
2yAl + 3F{e_x}{O_y} \to yA{l_2}{O_3} + 3xFe\\
2Fe + 3C{l_2} \to 2FeC{l_3}
\end{array}\)