This is a precipitation reaction: AgN3 is the formed precipitate.
Reactants:
NaN3
Names: Sodium azide, Sodium trinitride, SmiteAzium, Azide, Sodium salt of hydrazoic acid, Hydrazoic acid, sodium salt
Appearance: Colorless to white solid ; Colourless hexagonal crystals ; Colorless to white, odorless, crystalline solid. [pesticide] [Note: Forms hydrazoic acid (HN3) in water.]