{"id":114323,"date":"2022-02-03T23:07:22","date_gmt":"2022-02-03T22:07:22","guid":{"rendered":"https:\/\/material-properties.org\/air-densite-capacite-thermique-conductivite-thermique\/"},"modified":"2022-03-22T08:32:29","modified_gmt":"2022-03-22T07:32:29","slug":"air-densite-capacite-thermique-conductivite-thermique","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/","title":{"rendered":"Air &#8211; Densit\u00e9 &#8211; Capacit\u00e9 thermique &#8211; Conductivit\u00e9 thermique"},"content":{"rendered":"<h2>\u00c0 propos de Air<\/h2>\n<p>L&rsquo;air est un m\u00e9lange d&rsquo;azote, d&rsquo;oxyg\u00e8ne, d&rsquo;argon, de dioxyde de carbone, de vapeur d&rsquo;eau et d&rsquo;autres \u00e9l\u00e9ments traces.\u00a0L&rsquo;atmosph\u00e8re de la Terre est la couche de gaz, commun\u00e9ment appel\u00e9e air, retenue par la gravit\u00e9 terrestre, entourant la plan\u00e8te Terre et formant son atmosph\u00e8re plan\u00e9taire.<br \/>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108229\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price.png\" alt=\"propri\u00e9t\u00e9s de l'air densit\u00e9 r\u00e9sistance prix\" width=\"500\" height=\"500\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price.png 1000w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price-768x768.png 768w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h3 style=\"text-align: center;\">R\u00e9sum\u00e9<\/h3>\n<table class=\"a\">\n<tbody>\n<tr class=\"b\">\n<td style=\"text-align: center;\">Nom<\/td>\n<td style=\"text-align: center;\"><strong>Air<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Phase \u00e0 STP<\/td>\n<td style=\"text-align: center;\"><strong>gazeux<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Densit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>1,23 kg\/m<sup>3<\/sup><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">R\u00e9sistance \u00e0 la traction ultime<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Limite d&rsquo;\u00e9lasticit\u00e9<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Module de Young<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Duret\u00e9 Brinell<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Point de fusion<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Conductivit\u00e9 thermique<\/td>\n<td style=\"text-align: center;\"><strong>0,025 W\/mK<\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Capacit\u00e9 thermique<\/td>\n<td style=\"text-align: center;\"><strong><span style=\"text-align: start;\">1006 J\/g\u00b7K<\/span><\/strong><\/td>\n<\/tr>\n<tr class=\"c\">\n<td style=\"text-align: center;\">Prix<\/td>\n<td style=\"text-align: center;\"><strong>N \/ A<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h2>Densit\u00e9 de l&rsquo;air<\/h2>\n<p class=\"wp-caption-text\">Les densit\u00e9s typiques de diverses substances sont \u00e0 la pression atmosph\u00e9rique.<a href=\"https:\/\/material-properties.org\/what-is-density-physics-definition\/\"><strong>La densit\u00e9<\/strong><\/a> est d\u00e9finie comme la\u00a0<strong>masse par unit\u00e9 de volume<\/strong>. C&rsquo;est une\u00a0<strong>propri\u00e9t\u00e9 intensive<\/strong>, qui est d\u00e9finie math\u00e9matiquement comme la masse divis\u00e9e par le volume: <strong>\u03c1 = m\/V<\/strong><\/p>\n<p>En d&rsquo;autres termes, la densit\u00e9 (\u03c1) d&rsquo;une substance est la masse totale (m) de cette substance divis\u00e9e par le volume total (V) occup\u00e9 par cette substance. L&rsquo;unit\u00e9 SI standard est\u00a0<strong>le kilogramme par m\u00e8tre cube<\/strong> (<strong>kg\/m<sup>3<\/sup><\/strong>). L&rsquo;unit\u00e9 anglaise standard est\u00a0<strong>la masse de livres par pied cube<\/strong> (<strong>lbm\/ft<sup>3<\/sup><\/strong>).<\/p>\n<p>La densit\u00e9 de l&rsquo;air est de\u00a0<strong>1,23 kg\/m<sup>3<\/sup>.<\/strong><\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Densit\u00e9 des mat\u00e9riaux<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"wp-image-108113 size-medium aligncenter\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-300x179.png\" alt=\"Tableau des mat\u00e9riaux - Densit\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"179\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-300x179.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-1024x610.png 1024w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density-768x458.png 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Density.png 1368w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<h2>Propri\u00e9t\u00e9s thermiques de l&rsquo;air<\/h2>\n<h3>Air &#8211; Point de fusion et point d&rsquo;\u00e9bullition<\/h3>\n<p style=\"font-size: 16px; font-weight: 400;\"><strong>Le point de fusion de l&rsquo;air est\u00a0<b>N\/A<\/b><\/strong>\u00a0.<\/p>\n<p style=\"font-size: 16px; font-weight: 400;\"><strong>Le point d&rsquo;\u00e9bullition de l&rsquo;air est\u00a0<\/strong><b>N\/A<\/b>\u00a0.<\/p>\n<p style=\"font-size: 16px; font-weight: 400;\">Notez que ces points sont associ\u00e9s \u00e0 la pression atmosph\u00e9rique standard.<\/p>\n<h3>Air &#8211; Conductivit\u00e9 thermique<\/h3>\n<p>La conductivit\u00e9 thermique de\u00a0<strong>l&rsquo;air<\/strong> est\u00a0 de\u00a0<strong>0,025\u00a0<\/strong><strong>W\/(m\u00b7K)<\/strong>.<\/p>\n<p>Les caract\u00e9ristiques de transfert de chaleur d&rsquo;un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la <strong>conductivit\u00e9 thermique<\/strong>, k (ou \u03bb), mesur\u00e9e en <strong>W\/mK<\/strong>. C&rsquo;est une mesure de la capacit\u00e9 d&rsquo;une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par\u00a0<a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\">conduction<\/a>. Notez que <a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong>la loi de Fourier<\/strong><\/a> s&rsquo;applique \u00e0 toute mati\u00e8re, quel que soit son \u00e9tat (solide, liquide ou gaz), par cons\u00e9quent, elle est \u00e9galement d\u00e9finie pour les liquides et les gaz.<\/p>\n<h3>Coefficient de dilatation thermique de l&rsquo;air<\/h3>\n<p>Le coefficient de dilatation thermique lin\u00e9aire de\u00a0<strong>l&rsquo;air<\/strong> est\u00a0<b>N\/A.<\/b><\/p>\n<p><strong>La dilatation thermique<\/strong>\u00a0est g\u00e9n\u00e9ralement la tendance de la mati\u00e8re \u00e0 changer ses dimensions en r\u00e9ponse \u00e0 un changement de temp\u00e9rature.\u00a0Il est g\u00e9n\u00e9ralement exprim\u00e9 sous la forme d&rsquo;un changement fractionnaire de longueur ou de volume par unit\u00e9 de changement de temp\u00e9rature.<\/p>\n<h3>Air &#8211; Chaleur sp\u00e9cifique, chaleur latente de fusion, chaleur latente de vaporisation<\/h3>\n<p><strong>La chaleur sp\u00e9cifique de l&rsquo;air est de\u00a0<\/strong><b>1006 J\/g K<\/b>.<\/p>\n<p><strong>La capacit\u00e9 calorifique<\/strong> est une propri\u00e9t\u00e9 extensive de la mati\u00e8re, c&rsquo;est-\u00e0-dire qu&rsquo;elle est proportionnelle \u00e0 la taille du syst\u00e8me.\u00a0<strong>La capacit\u00e9 thermique C<\/strong>\u00a0a l&rsquo;unit\u00e9 d&rsquo;\u00e9nergie par degr\u00e9 ou d&rsquo;\u00e9nergie par kelvin.\u00a0Lors de l&rsquo;expression du m\u00eame ph\u00e9nom\u00e8ne en tant que propri\u00e9t\u00e9 intensive, la\u00a0\u00a0<strong>capacit\u00e9 thermique<\/strong>\u00a0\u00a0est divis\u00e9e par la quantit\u00e9 de substance, de masse ou de volume, ainsi la quantit\u00e9 est ind\u00e9pendante de la taille ou de l&rsquo;\u00e9tendue de l&rsquo;\u00e9chantillon.<\/p>\n<p><strong>La chaleur latente de fusion de l&rsquo;air est\u00a0<\/strong><b>N\/A<\/b>.<\/p>\n<p><strong>La chaleur latente de vaporisation de l&rsquo;air est\u00a0<\/strong><b>N\/<\/b>\u00a0.<\/p>\n<p>La chaleur latente est la quantit\u00e9 de chaleur ajout\u00e9e ou retir\u00e9e d&rsquo;une substance pour produire un changement de phase.\u00a0Cette \u00e9nergie d\u00e9compose les forces attractives intermol\u00e9culaires, et doit \u00e9galement fournir l&rsquo;\u00e9nergie n\u00e9cessaire pour dilater le gaz (le\u00a0\u00a0<strong>p\u0394V travail<\/strong>).\u00a0Lorsque la chaleur latente est ajout\u00e9e, aucun changement de temp\u00e9rature ne se produit.\u00a0L&rsquo;enthalpie de vaporisation est fonction de la pression \u00e0 laquelle cette transformation a lieu.<\/p>\n<div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Point de fusion des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/melting-point-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108050 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Metling-Point-300x183.png\" alt=\"Tableau des mat\u00e9riaux - Point de fusion\" width=\"300\" height=\"183\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Conductivit\u00e9 thermique des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/thermal-conductivity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108055 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Thermal-Conductivity-300x180.png\" alt=\"Tableau des mat\u00e9riaux - Conductivit\u00e9 thermique\" width=\"300\" height=\"180\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Capacit\u00e9 calorifique des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/heat-capacity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108063 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Heat-Capacity-300x179.png\" alt=\"Tableau des mat\u00e9riaux - Capacit\u00e9 calorifique\" width=\"300\" height=\"179\" \/><\/a><\/p>\n<h3 style=\"text-align: center;\"><\/h3>\n<\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n<div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">La r\u00e9sistance des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/strength-of-materials-tensile-yield\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108070 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Strength-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - R\u00e9sistance des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">\u00c9lasticit\u00e9 des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/elasticity-of-materials\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108080 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Elasticity-of-Materials-300x185.png\" alt=\"Tableau des mat\u00e9riaux - \u00c9lasticit\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"185\" \/><\/a><\/p><\/div><\/div> <div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h3 style=\"text-align: center;\">Duret\u00e9 des mat\u00e9riaux<\/h3>\n<p><a href=\"https:\/\/material-properties.org\/hardness-of-materials-brinell-mohs\/\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-108085 size-medium\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/02\/Material-Table-Hardness-of-Materials-300x182.png\" alt=\"Tableau des mat\u00e9riaux - Duret\u00e9 des mat\u00e9riaux\" width=\"300\" height=\"182\" \/><\/a>\u00a0 <\/p><\/div><\/div> <div class=\"su-divider su-divider-style-dotted\" style=\"margin:25px 0;border-width:3px;border-color:#999999\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u00c0 propos de Air L&rsquo;air est un m\u00e9lange d&rsquo;azote, d&rsquo;oxyg\u00e8ne, d&rsquo;argon, de dioxyde de carbone, de vapeur d&rsquo;eau et d&rsquo;autres \u00e9l\u00e9ments traces.\u00a0L&rsquo;atmosph\u00e8re de la Terre est la couche de gaz, commun\u00e9ment appel\u00e9e air, retenue par la gravit\u00e9 terrestre, entourant la plan\u00e8te Terre et formant son atmosph\u00e8re plan\u00e9taire. R\u00e9sum\u00e9 Nom Air Phase \u00e0 STP gazeux Densit\u00e9 &#8230; <a title=\"Air &#8211; Densit\u00e9 &#8211; Capacit\u00e9 thermique &#8211; Conductivit\u00e9 thermique\" class=\"read-more\" href=\"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/\">Read more<\/a><\/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":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>A\u00e9rien | Densit\u00e9, capacit\u00e9 thermique, conductivit\u00e9 thermique<\/title>\n<meta name=\"description\" content=\"L&#039;air est un m\u00e9lange d&#039;azote, d&#039;oxyg\u00e8ne, d&#039;argon, de dioxyde de carbone, de vapeur d&#039;eau et d&#039;autres \u00e9l\u00e9ments traces. L&#039;atmosph\u00e8re de la Terre est la couche de gaz, commun\u00e9ment appel\u00e9e air, retenue par la gravit\u00e9 terrestre, entourant la plan\u00e8te Terre et formant son atmosph\u00e8re plan\u00e9taire.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A\u00e9rien | Densit\u00e9, capacit\u00e9 thermique, conductivit\u00e9 thermique\" \/>\n<meta property=\"og:description\" content=\"L&#039;air est un m\u00e9lange d&#039;azote, d&#039;oxyg\u00e8ne, d&#039;argon, de dioxyde de carbone, de vapeur d&#039;eau et d&#039;autres \u00e9l\u00e9ments traces. L&#039;atmosph\u00e8re de la Terre est la couche de gaz, commun\u00e9ment appel\u00e9e air, retenue par la gravit\u00e9 terrestre, entourant la plan\u00e8te Terre et formant son atmosph\u00e8re plan\u00e9taire.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-03T22:07:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-22T07:32:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/material-properties.org\/wp-content\/uploads\/2021\/03\/air-properties-density-strength-price.png\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/\",\"url\":\"https:\/\/material-properties.org\/fr\/air-densite-capacite-thermique-conductivite-thermique\/\",\"name\":\"A\u00e9rien | Densit\u00e9, capacit\u00e9 thermique, conductivit\u00e9 thermique\",\"isPartOf\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#website\"},\"datePublished\":\"2022-02-03T22:07:22+00:00\",\"dateModified\":\"2022-03-22T07:32:29+00:00\",\"author\":{\"@id\":\"https:\/\/material-properties.org\/fr\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"L'air est un m\u00e9lange d'azote, d'oxyg\u00e8ne, d'argon, de dioxyde de carbone, de vapeur d'eau et d'autres \u00e9l\u00e9ments traces. 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