nitrous oxide - définition. Qu'est-ce que nitrous oxide
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Qu'est-ce (qui) est nitrous oxide - définition

CHEMICAL COMPOUND
Nitrous Oxide; Happy gas; Laughing Gas; Nitrouse oxide; Hippie crack; N2O; Nitros; Dinitrogen monoxide; N2o; Nitrus oxide; Phlogisticated nitrous air; Effects of nitrous oxide on the body; E942; N2O-N; N₂O; Inhaling Nitrous Oxide; Laughy gas; Laugh-making gas; Nitrogen(I) oxide; ATC code N01AX13; ATCvet code QN01AX13; N 2 O; Dinitrogen Monoxide; Laughing gas; Nitrogen protoxide; Nitroux oxide; Hyponitrous oxide; Protoxide of nitrogen; Nitrous oxide gas
  • Sir [[Humphry Davy]]'s ''Researches chemical and philosophical: chiefly concerning nitrous oxide'' (1800), pages 556 and 557 (right), outlining potential anaesthetic properties of nitrous oxide in relieving pain during surgery
  • Street sign indicating ban of nitrous oxide use near the Poelestraat in [[Groningen]]
  • [[Aquatint]] depiction of a laughing gas party in the nineteenth century, by [[Thomas Rowlandson]]
  • access-date=2020-11-09}}</ref>
  • Nitrous oxide atmospheric concentration since 1978.
  • Annual growth rate of atmospheric nitrous oxide since 2000.
  • Trends in the atmospheric abundance of long-lived greenhouse gases
  • O}} tanks used in [[dentistry]]
  • parts-per-billion]].
  • O}} [[whipped-cream charger]]s
  • Nitrous oxide production
  • Whippit]] remnants (the small steel canisters) of recreational drug use, the Netherlands, 2017

nitrous oxide         
¦ noun Chemistry a colourless gas with a sweetish odour which produces exhilaration or anaesthesia when inhaled and is used as an anaesthetic. [N2O.]
nitrous oxide         
Laughing-gas, protoxide of nitrogen, exhilarating gas, nitrogen monoxide.
laughing gas         
Laughing gas is a type of anaesthetic gas which sometimes has the effect of making people laugh uncontrollably.
= nitrous oxide
N-UNCOUNT

Wikipédia

Nitrous oxide

Nitrous oxide (dinitrogen oxide or dinitrogen monoxide), commonly known as laughing gas, nitrous, or nos, is a chemical compound, an oxide of nitrogen with the formula N
2
O
. At room temperature, it is a colourless non-flammable gas, and has a slightly sweet scent and taste. At elevated temperatures, nitrous oxide is a powerful oxidiser similar to molecular oxygen.

Nitrous oxide has significant medical uses, especially in surgery and dentistry, for its anaesthetic and pain-reducing effects. Its colloquial name, "laughing gas", coined by Humphry Davy, is due to the euphoric effects upon inhaling it, a property that has led to its recreational use as a dissociative anaesthetic. It is on the World Health Organization's List of Essential Medicines. It is also used as an oxidiser in rocket propellants, and in motor racing to increase the power output of engines.

Nitrous oxide's atmospheric concentration reached 333 parts per billion (ppb) in 2020, increasing at a rate of about 1 ppb annually. It is a major scavenger of stratospheric ozone, with an impact comparable to that of CFCs. Global accounting of N
2
O
sources and sinks over the decade ending 2016 indicates that about 40% of the average 17 TgN/yr (teragrams, or million metric tons, of nitrogen per year) of emissions originated from human activity, and shows that emissions growth chiefly came from expanding agriculture and industry sources within emerging economies. Being the third most important long-lived greenhouse gas, nitrous oxide also substantially contributes to global warming.

Nitrous oxide is used as a propellant, and has a variety of applications from rocketry to making whipped cream. It is used as a recreational drug for its potential to induce a brief "high"; most recreational users are unaware of its neurotoxicity and potential to cause neurological damage.

Exemples du corpus de texte pour nitrous oxide
1. Scaled uses nitrous oxide as an oxidizer in its rockets, which are tested at the airport.
2. Nylon manufacture creates nitrous oxide, a greenhouse gas more potent than CO2.
3. Nitrous oxide is considered the safest anesthetic for reducing anxiety and pain.
4. These include carbon dioxide (CO2), methane, nitrous oxide and chlorofluorocarbons (CFCs) and the replacements for CFCs.
5. Tony Pereira, the company director of Nitrous Oxide, or N2O, was more forthcoming.