Question

ammonium chloride+ sodium nitrate---------> sodium chloride+water+nitrogen

Answer 1

There is no reaction.
All the ions are soluble in water.

The only possible "products " that could be formed are
NH4Cl + NaNO3 → NaCl +NH4NO3 

But this reaction would not proceed because once again the supposed "products" are soluble in water. All that you will get is a solution containing a mixture of Na+ , NH4+ Cl- and NO3- ions.

Answer 2

NH4Cl + NaNO2 = NH4NO2 + NaCl. ... Subsequently ammonium nitrite being thermally unstable breaks into nitrogen(gas) and water(steam) and sodium chloride is left behind as depicted in the above equations. This is a method to prepare nitrogen in the laboratory.