19. Balance each of the following chemical equations by inspection (a) Pb(s) + O₂(g) →→PbO(s) (b) LINO3(s)→→→LiNO₂(s) + O₂(8) (c) Mg(s) + HC₂H₂O₂(aq) → Mg(C₂H₂O₂)2(aq) + H₂(g) (d) Hg₂(NO3)2(aq) + NaBr(aq)

→ Hg₂Br₂(s) + NaNO3(aq) (e) H₂CO3(aq) + NH₂OH(aq) → (NH4)2CO3(aq) + H₂O(1)