1. Hg → Hg + O2;                                                                    31. KOH + AlCl3 → Al(OH)3 + KCl;

2. Zn + H2SO4  → ZnSO4 + H2;                                               32. CH4 + O2→ CO2 + H2O;

3. Na2S + Pb(NO3)2→ PbS + NaNO3                                      33. FeO + HCl → FeCl2 + H2;

4. Ca + O2 → CaO;                                                                   34. P2O5 + H2O → H3PO4;

5. Na + H2O → NaOH + H2;                                                    35. Ag2O + HCl → AgCl2 + H2O;

помогите!! уравнить!!!

2 Na + 2 H2O = 2 NaOH + H2 Zn + H2SO4  → ZnSO4 + H2Na2S + Pb(NO3)2→ PbS + 2 NaNO3     2 Ca + O2 → 2 CaO   Ag2O + 2 HCl →AgCl2 + H2OP2O5 +3 H2O →2 H3PO4CH4 +2 O2→ CO2 + 2 H2OFe +2 HCl → FeCl2 + H2