Spectator ions/net ionic equation

Of:
2AgNO3(aq) + H2S(g) -----> Ag2S(s) + 2HNO3(aq)

for some reason the answer is just the NO3- ion, and i was wondering if anyone could tell me why. thanks!

The spectator ions do not take part in the reaction. AgNO3 is aqueous, and ionic, therefore can be represented as Ag+(aq) + NO3-(aq). H2S is molecular and is not ionized. Ag2S is a solid and is not ionized. HNO3 is aqueous and it is a strong acid and will ionize completely. Therefore the complete ionic equation is

2 Ag+(aq) + 2 NO3-(aq) + H2S(g)-----------> Ag2S(s) + 2 H+(aq) + 2 NO3-(aq)

As you can see, it is only the nitrate ion that did not change.