1. 2Zn + O2---->2ZnO
2. K2O + H2O---->2KOH
3. 2Na + 2H2O---->2NaOH + H2
4. 3CaO + 2H3PO4---->Ca3(PO4)2 + 3H2O
5. Mg(OH)2 + 2HNO3---->Mg(NO3)2 + 2H2O
6. K2O + SO3---->K2SO4
7. 2NaOH + N2O5---->2NaNO3 + H2O
8. Fe(NO3)3 + 3NaOH---->Fe(OH)3 + 3NaNO3
9. FeCl2 + 2KOH---->Fe(OH)2 + 2KCl
10. CuO + H2SO4---->CuSO4 + H2O
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1. 2Zn + O2---->2ZnO
2. K2O + H2O---->2KOH
3. 2Na + 2H2O---->2NaOH + H2
4. 3CaO + 2H3PO4---->Ca3(PO4)2 + 3H2O
5. Mg(OH)2 + 2HNO3---->Mg(NO3)2 + 2H2O
6. K2O + SO3---->K2SO4
7. 2NaOH + N2O5---->2NaNO3 + H2O
8. Fe(NO3)3 + 3NaOH---->Fe(OH)3 + 3NaNO3
9. FeCl2 + 2KOH---->Fe(OH)2 + 2KCl
10. CuO + H2SO4---->CuSO4 + H2O