{"id":2154,"date":"2018-06-18T23:58:05","date_gmt":"2018-06-18T23:58:05","guid":{"rendered":"http:\/\/zatizi.com\/?p=2154"},"modified":"2018-06-18T23:58:05","modified_gmt":"2018-06-18T23:58:05","slug":"pourcentage-massique-dun-element-dune-molecule","status":"publish","type":"post","link":"https:\/\/zatizi.com\/?p=2154","title":{"rendered":"pourcentage massique d&#8217;un \u00e9l\u00e9ment d&#8217;une mol\u00e9cule ?"},"content":{"rendered":"<ul>\n<li>pm (d&#8217;un \u00e9l\u00e9ment) (en %) = (<strong>masse atomique<\/strong> de l&#8217;\u00e9l\u00e9ment \/ <strong>masse molaire mol\u00e9culaire<\/strong>) x 100<\/li>\n<li>ex: pm de l\u2019azote dans l&#8217;acide nitrique HNO<sub>3<\/sub> = (14 \/ 63) x 100 = 22,2%<\/li>\n<li>si les orages apportent 3,6.10<sup>11<\/sup> kg d\u2019acide nitrique en une ann\u00e9e, l\u2019apport d\u2019azote est de: mN = 3,6.10<sup>11<\/sup> x 22,2\/100 = 8,0.10<sup>10<\/sup> kg<\/li>\n<li>si un engrais E contient un pm d&#8217;azote de 35%, il faudra donc un apport d\u2019engrais de: 35\/100 mE = 8,0.10<sup>10<\/sup> donc 8,0.10<sup>10<\/sup> x 100\/35 = 2,3.10<sup>11<\/sup> kg = 2,3.10<sup>8<\/sup> tonnes<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>pm (d&#8217;un \u00e9l\u00e9ment) (en %) = (masse atomique de l&#8217;\u00e9l\u00e9ment \/ masse molaire mol\u00e9culaire) x 100 ex: pm de l\u2019azote dans l&#8217;acide nitrique HNO3 = (14 \/ 63) x 100 = 22,2% si les orages apportent 3,6.1011 kg d\u2019acide nitrique en une ann\u00e9e, l\u2019apport d\u2019azote est de: mN = 3,6.1011 x 22,2\/100 = 8,0.1010 kg [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2163,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[58],"tags":[600],"persona":[],"class_list":["post-2154","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciences-fr","tag-pourcentage-massique","has-thumbnail"],"_links":{"self":[{"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/posts\/2154","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2154"}],"version-history":[{"count":0,"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/posts\/2154\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=\/wp\/v2\/media\/2163"}],"wp:attachment":[{"href":"https:\/\/zatizi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2154"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2154"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2154"},{"taxonomy":"persona","embeddable":true,"href":"https:\/\/zatizi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fpersona&post=2154"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}