I have a worksheet that I need to write net ionic equations for some reactions. I've done most of them but there is just one left that sort of confuses me. Can someone check over the ones I've already done and tell me how to do the one I couldn't get?
1. Hydrogen chloride gas is mixed with ammonia gas
NH
3(g) + HCl(g)

NH
4Cl(g)
2. Carbon dioxide gas is bubbled through a solution of 0.5M potassium hydroxide
CO
2(g) + OH
-(aq)

HCO
3-(aq)
3. Boron trifluoride gas is mixed with gaseous ammonia
BF
3(g) + NH
3(g)

BF
3NH
3(g)
The one i can't get is:4. Solid ammonium nitrate is added to water
Any help is appreciated, thanks!