1. CH4+2O2=CO2+2H2O
2. 2Mg+O2=2MgO
3. BaCO3=BaO+CO2↑
4. 2Na+Cl2=2NaCl
5. 2K+2H2O=2KOH+H2↑
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Answers & Comments
1. CH4+2O2=CO2+2H2O
2. 2Mg+O2=2MgO
3. BaCO3=BaO+CO2↑
4. 2Na+Cl2=2NaCl
5. 2K+2H2O=2KOH+H2↑