When magnesium nitrate is heated, it decomposes. Which equation correctly represents the thermal decomposition of magnesium nitrate?
- A$\mathrm{Mg(NO_3)_2} \rightarrow \mathrm{MgO} + \mathrm{NO_2} + \mathrm{NO} + \mathrm{O_2}$
- B$2\mathrm{Mg(NO_3)_2} \rightarrow 2\mathrm{MgO} + 4\mathrm{NO} + 3\mathrm{O_2}$
- C$2\mathrm{Mg(NO_3)_2} \rightarrow 2\mathrm{MgO} + 4\mathrm{NO_2} + \mathrm{O_2}$
- D$3\mathrm{Mg(NO_3)_2} \rightarrow \mathrm{Mg_2N_3} + \mathrm{MgO} + 3\mathrm{NO} + 7\mathrm{O_2}$