S+O2-to->SO2
2Mg+O2-to->2MgO
2Zn+O2-to->2ZnO
a)\(S+O2\underrightarrow{to}SO2\)
b)\(2Mg+O2\underrightarrow{to}2MgO\)
c)\(2Zn+O2\underrightarrow{to}2ZnO\)
a, \(S+O_2\underrightarrow{^{to}}SO_2\)
b,\(2Mg+O_2\underrightarrow{^{to}}2MgO\)
c,\(2Zn+O_2\underrightarrow{^{to}}2ZnO\)