Found in the air
collected by distilling air (cool air way down, then heat it until it’s melting point)
used for removing warts, ammonia (fertilizer and crystal meth), keeping things cold, and to keep things from reacting
oxides of Nitrogen:
N2O-nitrous oxide or dinitrogen monoxide, fuel for racing cars, "laughing gas"
NO- Nitric Oxide, toxic, vasodialator (regulates blood pressure), neurotransmitter, released by Viagra
NO2- Nitrogen dioxide, brown gas, comes from combustion, contributes to Acid Rain