Ba(OH)2 + HNO3 = KOH + H2SIO3 = Al(OH)3 + HCl = Zn(OH)2 + H2SO4 = K3PO4 + HBr = AgNO3 + HBr = MgCO3 + HBr = K2CO3 + HNO3 = Fe + H2SO4 (разб) = Mg + H2SO4 (разб) = Fe + HCl = Al +…

Here are the balanced chemical equations for the given reactions:

1. Ba(OH)₂ + 2 HNO₃ → Ba(NO₃)₂ + 2 H₂O

2. KOH + H₂SiO₃ → K₂SiO₃ + 2 H₂O (Note: This reaction usually is an acid-base reaction where silicic acid reacts with potassium hydroxide.)

3. Al(OH)₃ + 3 HCl → AlCl₃ + 3 H₂O

4. Zn(OH)₂ + H₂SO₄ → ZnSO₄ + 2 H₂O

5. K₃PO₄ + 3 HBr → 3 KBr + H₃PO₄

6. AgNO₃ + HBr → AgBr + HNO₃

7. MgCO₃ + 2 HBr → MgBr₂ + H₂O + CO₂

8. K₂CO₃ + 2 HNO₃ → 2 KNO₃ + H₂O + CO₂

9. Fe + H₂SO₄ (разб) → FeSO₄ + H₂ (reduced iron sulfate with hydrogen gas)

10. Mg + H₂SO₄ (разб) → MgSO₄ + H₂ (produces magnesium sulfate and hydrogen gas)

11. Fe + 2 HCl → FeCl₂ + H₂

12. 2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

13. 2 Al + 3 H₂SO₄ (конц) → Al₂(SO₄)₃ + 3 H₂

14. Fe + 2 H₂SO₄ (конц) → Fe₂(SO₄)₃ + 2 H₂O + SO₂

15. Mg + 2 H₂SO₄ (конц) → MgSO₄ + H₂ + SO₂

16. P + 5 H₂SO₄ (конц) → H₃PO₄ + 5 SO₂ + 2 H₂O

These reactions represent the acid-base neutralization and the reaction of metals with acids, both in dilute and concentrated forms. If you have specific questions about any of these reactions, feel free to ask!