What are the balanced equations for these questions

1.Magnesium metal reacts with chlorine gas to form solid magnesium chloride.
2.Solid calcium carbonate reacts with hydrochloric acid to form calcium chloride solution,water and carbon dioxide gas.
3.Dilute sulphuric acid reacts with sodium hydroxide solution to form sodium sulphate solution and water.
4.Potassium metal reacts with water to form potassium hydroxide and releases hydrogen gas.
5.Solid sodium oxide reacts with water to form sodium hydroxide solution.

1. Mg + Cl2 ---------------->MgCl2
2. CaCO3 + 2HCl ------------->CaCl2 + H2O + CO2
3. H2SO4 +2 NaOH ---------------> Na2SO4 + 2H2O
4. 2K + 2 H2O --------------->2 KOH+ H2
5. Na2O+ H2O ------------> 2 NaOH