Final answer:
The balanced net ionic equation is Na2S(aq) + Pb(NO3)2(aq) → PbS(s) + 2NaNO3(aq).
Step-by-step explanation:
The balanced net ionic equation for the reaction of aqueous sodium sulfide with aqueous lead(II) nitrate is:
Na2S(aq) + Pb(NO3)2(aq) → PbS(s) + 2NaNO3(aq)
In this reaction, sodium sulfide reacts with lead(II) nitrate to form a solid precipitate of lead sulfide and a solution of sodium nitrate. The balanced net ionic equation represents only the species that undergo a chemical change, while the spectator ions are left out.