Nitrous oxide is a colourless gas. It has two nitrogen atoms & a single oxygen atom denoted as N2O. Nitrous oxide is usually used for sedation and pain relief by medical doctors & 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 cooler temperatures. However, when super heated the oxygen is broken off & helps combust the cars ordinary fuel and release more power.
The nitrous oxide sold here is for culinary purposes. It is utilised as a foaming agent in food and drink, whipping cream, making mousses, infusing flavours into alcohol and lots of other foodcooking uses.