Nitrous oxide is a colourless gas. It has two nitrogen atoms and a single oxygen atom shortened as N2O. Nitrous oxide is usually used for sedation & pain relief by medical professionals and dentists. It has also been misused by people for recreational reasons.
Another use for nitrous oxide gas is as a fuel booster in cars. Nitrous oxide is not flammable at low temperatures. However, when super heated the oxygen is release & helps combust the cars ordinary fuel and release more power.
The nitrous oxide sold here is for food & drink purposes. It can be used as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol & many other culinary applications.