106. There are five oxides of N, only two of which are important.
NITROGEN MONOXIDE (N2O).
107. Preparation.
Experiment 66.-Put into a flask, holding 200cc, lOg of ammonium nitrate, NH4NO3; heat it over wire gauze or asbestus in an iron plate, having a d.t. connected with a large t.t., which is held in a receiver of water, and from this t.