{"id":115492,"date":"2022-04-25T05:31:29","date_gmt":"2022-04-25T04:31:29","guid":{"rendered":"https:\/\/material-properties.org\/helium-et-oxygene-comparaison-proprietes\/"},"modified":"2022-04-26T07:03:35","modified_gmt":"2022-04-26T06:03:35","slug":"helium-et-oxygene-comparaison-proprietes","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/helium-et-oxygene-comparaison-proprietes\/","title":{"rendered":"H\u00e9lium et Oxyg\u00e8ne – Comparaison – Propri\u00e9t\u00e9s"},"content":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l’h\u00e9lium et de l’oxyg\u00e8ne, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. H\u00e9lium contre Oxyg\u00e8ne.<\/em><\/p>\n

\"h\u00e9lium<\/p>\n

\n
<\/span>Comparer l'h\u00e9lium avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

\"Hydrog\u00e8ne<\/a><\/p>\n

\"Oxyg\u00e8ne<\/a><\/p>\n

\"Argon<\/a><\/p>\n

\"Aluminium<\/a><\/p>\n

\"N\u00e9on<\/a><\/p>\n

\"X\u00e9non<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

\n
<\/span>Comparer l'oxyg\u00e8ne avec un autre \u00e9l\u00e9ment<\/div>
\n
<\/div>\n

\"Sodium<\/a><\/p>\n

\"Fluor<\/a><\/p>\n

\"Magn\u00e9sium<\/a><\/p>\n

\"Aluminium<\/a><\/p>\n

\"Silicium<\/a><\/p>\n

\"Soufre<\/a><\/p>\n

\"Chlore<\/a><\/p>\n

\"Potassium<\/a><\/p>\n

\"Calcium<\/a><\/p>\n

\"Fer<\/a><\/p>\n

\"Hydrog\u00e8ne<\/a><\/p>\n

\"H\u00e9lium<\/a><\/p>\n

\"Lithium<\/a><\/p>\n

\"B\u00e9ryllium<\/a><\/p>\n

\"Bore<\/a><\/p>\n

\"Carbone<\/a><\/p>\n<\/div><\/div>\n<\/div><\/div>\n

<\/div>\n
\n

H\u00e9lium et Oxyg\u00e8ne – \u00c0 propos des \u00e9l\u00e9ments<\/h2>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

H\u00e9lium<\/h3>\n

C’est un gaz monoatomique incolore, inodore, insipide, non toxique, inerte, le premier du groupe des gaz rares dans le tableau p\u00e9riodique.\u00a0Son point d’\u00e9bullition est le plus bas de tous les \u00e9l\u00e9ments.
\n<\/p><\/div>

<\/div><\/div>\n<\/div><\/div>\n
\n
\"\"<\/div>
\n

Oxyg\u00e8ne<\/h3>\n

L’oxyg\u00e8ne est un gaz r\u00e9actif incolore et inodore, l’\u00e9l\u00e9ment chimique de num\u00e9ro atomique 8 et le composant vital de l’air.\u00a0C’est un membre du groupe chalcog\u00e8ne du tableau p\u00e9riodique, un non-m\u00e9tal hautement r\u00e9actif et un agent oxydant qui forme facilement des oxydes avec la plupart des \u00e9l\u00e9ments ainsi qu’avec d’autres compos\u00e9s.\u00a0En masse, l’oxyg\u00e8ne est le troisi\u00e8me \u00e9l\u00e9ment le plus abondant dans l’univers, apr\u00e8s l’hydrog\u00e8ne et l’h\u00e9lium.
\n<\/p><\/div>

<\/div><\/div>\n<\/div><\/div>\n
<\/div>\n
\n

\"H\u00e9lium<\/p>\n<\/div><\/div>\n

\n

\"Oxyg\u00e8ne<\/p>\n

<\/p><\/div><\/div>\n

Source\u00a0: www.luciteria.com<\/p>\n

<\/div>\n
\n

H\u00e9lium et Oxyg\u00e8ne – Applications<\/h2>\n<\/div><\/div>\n
\n
\n
\n

H\u00e9lium<\/a><\/h3>\n

L’h\u00e9lium est utilis\u00e9 \u00e0 de nombreuses fins qui n\u00e9cessitent certaines de ses propri\u00e9t\u00e9s uniques, telles que son bas point d’\u00e9bullition, sa faible densit\u00e9, sa faible solubilit\u00e9, sa conductivit\u00e9 thermique \u00e9lev\u00e9e ou son inertie.\u00a0Sur la production mondiale totale d’h\u00e9lium en 2014 d’environ 32 millions de kg (180 millions de m\u00e8tres cubes standard) d’h\u00e9lium par an, la plus grande utilisation (environ 32 % du total en 2014) concerne les applications cryog\u00e9niques, dont la plupart impliquent le refroidissement des aimants supraconducteurs dans scanners IRM m\u00e9dicaux et spectrom\u00e8tres RMN.\u00a0La plupart des aimants cliniques sont des aimants supraconducteurs, qui n\u00e9cessitent de l’h\u00e9lium liquide pour les maintenir tr\u00e8s froids.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n
\n
\n

Oxyg\u00e8ne<\/a><\/h3>\n

Les utilisations courantes de l’oxyg\u00e8ne comprennent la production d’acier, de plastiques et de textiles, le brasage, le soudage et le d\u00e9coupage d’aciers et d’autres m\u00e9taux, le propulseur de fus\u00e9e, l’oxyg\u00e9noth\u00e9rapie et les syst\u00e8mes de survie dans les avions, les sous-marins, les vols spatiaux et la plong\u00e9e.\u00a0La fusion du minerai de fer en acier consomme 55 % de l’oxyg\u00e8ne produit commercialement.\u00a0Dans ce processus, l’oxyg\u00e8ne est inject\u00e9 \u00e0 travers une lance \u00e0 haute pression dans le fer fondu, qui \u00e9limine les impuret\u00e9s de soufre et l’exc\u00e8s de carbone sous forme d’oxydes respectifs, de dioxyde de soufre et de dioxyde de carbone.\u00a0L’absorption d’oxyg\u00e8ne de l’air est le but essentiel de la respiration, c’est pourquoi la suppl\u00e9mentation en oxyg\u00e8ne est utilis\u00e9e en m\u00e9decine.\u00a0Le traitement augmente non seulement les niveaux d’oxyg\u00e8ne dans le sang du patient, mais a pour effet secondaire de diminuer la r\u00e9sistance au flux sanguin dans de nombreux types de poumons malades, ce qui soulage la charge de travail sur le c\u0153ur.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n

\n

H\u00e9lium et Oxyg\u00e8ne – Comparaison dans le tableau<\/h2>\n<\/div><\/div>H\u00e9lium<\/p>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u00c9l\u00e9ment<\/td>\nH\u00e9lium<\/strong><\/td>\nOxyg\u00e8ne<\/strong><\/td>\n<\/tr>\n
Densit\u00e9<\/td>\n0,00018 g\/cm3<\/strong><\/td>\n0,00143 g\/cm3<\/strong><\/td>\n<\/tr>\n
R\u00e9sistance \u00e0 la traction ultime<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Limite d’\u00e9lasticit\u00e9<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Module d’\u00e9lasticit\u00e9 de Young<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
\u00c9chelle de Mohs<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Brinell<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Duret\u00e9 Vickers<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Point de fusion<\/td>\n-272,2 \u00b0C<\/strong><\/td>\n-218,4 \u00b0C<\/strong><\/td>\n<\/tr>\n
Point d’\u00e9bullition<\/td>\n-268,9 \u00b0C<\/strong><\/td>\n-183 \u00b0C<\/strong><\/td>\n<\/tr>\n
Conductivit\u00e9 thermique<\/td>\n0,1513 W\/mK<\/strong><\/td>\n0,02674 W\/mK<\/strong><\/td>\n<\/tr>\n
Coefficient de dilatation thermique<\/td>\nN \/ A<\/strong><\/td>\nN \/ A<\/strong><\/td>\n<\/tr>\n
Chaleur sp\u00e9cifique<\/td>\n5,193 J\/g\u00b7K<\/span><\/strong><\/td>\n0,92 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n
Temp\u00e9rature de fusion<\/td>\n0,0138 kJ\/mol<\/span><\/strong><\/td>\n(O2) 0,444 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n
Chaleur de vaporisation<\/td>\n0,0845 kJ\/mol<\/span><\/strong><\/td>\n(O2) 6,82 kJ\/mol<\/span><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l’h\u00e9lium et de l’oxyg\u00e8ne, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. Il contient \u00e9galement des descriptions de base et des applications des deux \u00e9l\u00e9ments. H\u00e9lium contre Oxyg\u00e8ne. Source\u00a0: www.luciteria.com H\u00e9lium<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"yoast_head":"\nH\u00e9lium et Oxyg\u00e8ne - Comparaison - Propri\u00e9t\u00e9s - Material Properties<\/title>\n<meta name=\"description\" content=\"Cet article contient une comparaison des principales propri\u00e9t\u00e9s thermiques et atomiques de l'h\u00e9lium et de l'oxyg\u00e8ne, deux \u00e9l\u00e9ments chimiques comparables du tableau p\u00e9riodique. 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