Question

U)Why the copper wire and the crystals that were formed were washed with acetone and put aside? Balancing Chemical Equations 1. NaBr + Cl2 = NaCl + Br2 2. H2SO4 + B(OH)3 = B2(SO4)3 + H2O 3. Agl + Fe2(CO3)3 = Fel3 + Ag,CO, 4. Na2CO3 + HCI = NaCl + CO2 + H2O 5. Ca(OH)2 + H2SO4 = Casos + H20 6. Zna(PO4)2 + Li2CO3 = ZnCO; + LisPO. 7. Baz(PO4)3 + PbO = Pb(PO4)3 + Bao 8. C8H18 + O2 = CO2 + H2O 9. CuSO. + Al2O3 = Al2(SO4)3 + Cuo 10. V Os + Cas = CaO + V25s

Answer 1

D 2NaBr + Co > 2Na Cl + Bt, 2) 3H2504+ 2B(OH)3 → B (504)3+ 6H2O 3) 6AgI + Fe (CO3)3 → 2 Fe I +3 Ag.CO3 4) Na CO2 + 2HCl → 2NaCl + CO2 + H2O 5) Ca (OH)2+ H2SO4 → Cas04 + 2H2O 6) Zn3(PO4)2 + 3 Liz CO₂ → 3znCO₃+2 Liz POA Ba(PO4)3+ 2Pbo → Pb2(PO4)3 + 2Bao 8) 2C9 H18 + 2502 → 16C02 +18 H2O a) 3 CuSO4+AlyO3 → Al2(S04)3 +3 Cuo lô Va O5 + 5CAS 5CaO+ VgS5