Question

Balance the following chemical equations.

1. MgO + H2O -- Mg(OH)2
2.Na+H2O-- NaOH+ H2
3.NaHCO3 + HCI-- NaCI + H2O + CO2
4. Ca(OH)2 + CO2-- CaCO3 + H2O
5. Mg + O2-- MgO​

Answer 1

Answer:

1. MgO + H2O → Mg(OH)2
2. 2Na+2H2O→2NaOH+H2
3. NaHCO3 + HCl → NaCl + H2O + CO2
4. 2CaOH2 + 3Co2 → 2CaCo3 + 2H2O
5. 2 Mg + O2→ 2 MgO

Explanation:

Answer 2

1. MgO + H2O —> Mg(OH)2
This equation is already balanced

2. Na + H2O —> NaOH + H2
= 2Na + 2H2O —> 2NaOH + H2

3. NaHCO3 + HCl —> NaCl + H2O+ CO2
= This equation is already balanced

4. Ca(OH)2 + CO2 —> CaCO3 + H2O
= This equation is already balanced

5. Mg + O2 —> MgO
= 2Mg + O2 —> 2MgO