[tex]2NO+ O2 produce 2NO2\\4Al+3O2 produce 2Al2O3\\2AgO produce 2Ag+ O2 \\C2H4+ 3O2 produce 2CO2+2H2O\\Mg+2HCl produce MgCl2+H2\\2PbO2 produce 2PbO+ O2[/tex]
