\(4Na+O_2-^{t^o}\rightarrow2Na_2O\left(4:1:2\right)\\ P_2O_5+3H_2O\rightarrow2H_3PO_4\left(1:3:2\right)\\ 2HgO-^{t^o}\rightarrow2Hg+O_2\left(2:2:1\right)\\ 2Fe\left(OH\right)_3-^{t^o}\rightarrow Fe_2O_3+3H_2O\left(2:1:3\right)\)
\(4Na+O_2\rightarrow2Na_2O\left(4:1:2\right)\\ P_2O_5+3H_2O\rightarrow2H_3PO_{\text{ 4}}\left(1:3:2\right)\\ 2HgO\underrightarrow{t^o}2Hg+O_2\left(2:2:1\right)\\ 2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\left(2:1:3\right)\)