Please give me balanced chemical equations for the following reactions.?

Question

1- sodium + water ----> sodium hydroxide + hydrogen
2- Magnesium + steam ----> magnesium oxide + hydrogen
3- Hydrogen + mitrogen ----> ammonia
4- Magnesium + carbon dioxide ---> magnesium oxide+carbon

Answer 1

1. 2 Na + 2 H₂O → 2 NaOH + H₂
2. Mg + H₂O → MgO + H₂
3. 3 H₂+ N₂→ 2 NH₃
4. 2 Mg + CO₂→ 2 MgO + C

Answer 2

4Na + 8H20 -----------> 4NaH202 + 2H2 (I think, not sure
though)

Mg + H20 ------------> Mg0 + H2 (its already balanced)

3H2 + (i think u mean nitrogen) 2N ---------> 2NH3

2Mg + C02 -------> 2Mg0 + C


Hope this helps! Good luck!