Cr + Cu(NO3)2 = Ca(OH)2 + NH4Cl = AgNO3 + HCl = K2CO3 + HNO3 = CaCO3 + H2SO4 = NaF + HBr = Al2O3 + K2SO3 = SiO2 + MgCO3 = ZnO + Na2CO3 = P2O5 + Na2CO3 разложение ZnCO3 =

Here are the chemical reactions you requested, including the products formed: 1. **Cr + Cu(NO3)2 → Cr(NO3)2 + Cu** - Chromium displaces copper from copper(II) nitrate. 2. **Ca(OH)2 + 2NH4Cl → CaCl2 + 2H2O + 2NH3** - Calcium hydroxide reacts with ammonium chloride to form calcium chloride, water, and ammonia. 3. **AgNO3 + HCl → AgCl + HNO3** - Silver nitrate reacts with hydrochloric acid to produce silver chloride and nitric acid. 4. **K2CO3 + 2HNO3 → 2KNO3 + H2O + CO2** - Potassium carbonate reacts with nitric acid to produce potassium nitrate, water, and carbon dioxide. 5. **CaCO3 + H2SO4 → CaSO4 + CO2 + H2O** - Calcium carbonate reacts with sulfuric acid to produce calcium sulfate, carbon dioxide, and water. 6. **NaF + HBr → NaBr + HF** - Sodium fluoride reacts with hydrobromic acid to form sodium bromide and hydrofluoric acid. 7. **Al2O3 + 3K2SO3 → Al2(SO3)3 + 6K** - Aluminum oxide reacts with potassium sulfite to form aluminum sulfite and potassium. 8. **SiO2 + MgCO3 → MgSiO3 + CO2** - Silicon dioxide reacts with magnesium carbonate to form magnesium silicate and carbon dioxide. 9. **ZnO + Na2CO3 → Na2ZnO2 + CO2** - Zinc oxide reacts with sodium carbonate to produce sodium zincate and carbon dioxide. 10. **P2O5 + Na2CO3 → 2NaPO3 + CO2** - Phosphorus pentoxide reacts with sodium carbonate to produce sodium phosphate and carbon dioxide. 11. **The decomposition of ZnCO3 (zinc carbonate)**: - **ZnCO3 → ZnO + CO2** - Zinc carbonate decomposes on heating to produce zinc oxide and carbon dioxide. If you need further assistance or details, feel free to ask!