solve it need it urgently
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1. 4Na +O 2= 2Na2O
2.Mg(OH)2 +2 HCl = MgCl2 + 2 H2O
3.4Fe +3 O 2 = 2Fe2O3
4. 2Al(OH)3 = Al2O3 + 3H2O
5. 2NH3 + 3CuO = 3Cu +N2 + 3H2O
6. 2HNO3 + Ca(OH)2 = Ca(NO3)2 + 2H2O
7. 2NaOH + H2SO4 = Na2SO4 + 2H2O
8. NaCl + AgNO3 = AgCl + NaNO3 ( already balanced)
9. BaCl2 + H2SO4 = BaSO4 + 2HCl
10. 2H2 O2 = 2H2O+ O2
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