Avogadro say\u0131s\u0131 veya Avogadro sabiti, bir elementin bir mol\u00fcndeki atom say\u0131s\u0131 ya da bir bile\u015fi\u011fin bir mol\u00fcndeki molek\u00fcl say\u0131s\u0131d\u0131r. 1 mol yani 12 gr Karbon12 elementindeki atom say\u0131s\u0131 deneysel olarak hesaplanarak 6.02214199×1023 [1] bulunmu\u015ftur. Say\u0131 bu alandaki katk\u0131lar\u0131ndan dolay\u0131 \u0130talyan bilim adam\u0131 Amedeo Avogadro’nun (1776\u20131856) ad\u0131 ile an\u0131l\u0131r.<\/p>\n
Tarih\u00e7e <\/p>\n
1811 y\u0131l\u0131nda Avagadro, ayn\u0131 s\u0131cakl\u0131k ve bas\u0131n\u00e7 ko\u015fullar\u0131 alt\u0131nda e\u015fit hacimdeki gazlar\u0131n, t\u00fcrleri ne olursa olsun ayn\u0131 say\u0131da molek\u00fcl i\u00e7erece\u011fini ke\u015ffetti. Bu atomlar\u0131n b\u00fcy\u00fckl\u00fc\u011f\u00fcn\u00fc ve a\u011f\u0131rl\u0131\u011f\u0131n\u0131 isabetli bir \u015fekilde \u00f6l\u00e7meyi sa\u011fl\u0131yordu.
\n Herhangi bir maddedeki molek\u00fcl say\u0131s\u0131n\u0131 ilk kez, Avusturyal\u0131 lise \u00f6\u011fretmeni Johann Josef Loschmidt (1821\u20131895) tarafindan hesaplanm\u0131\u015ft\u0131r. Loschmidt 1865 y\u0131l\u0131nda, o zamanlar \u00e7ok yeni olan kinetik molek\u00fcler teori yard\u0131m\u0131yla, 1 cm3 gaz i\u00e7erisinde normal s\u0131cakl\u0131k ve bas\u0131n\u00e7 \u015fartlar\u0131nda yakla\u015f\u0131k 2.6×1019 molek\u00fcl oldu\u011funu hesaplam\u0131\u015ft\u0131r. Bu de\u011fer Loschmidt sabiti olarak bilinir.<\/p>\n
Daha sonra, herhangi bir maddedeki molek\u00fcl say\u0131s\u0131n\u0131n hesaplan\u0131\u015f\u0131 ile ilgili \u00e7e\u015fitli y\u00f6ntemler ortaya at\u0131lm\u0131\u015ft\u0131r. \u00d6rne\u011fin; Einstein, mikroskobik par\u00e7ac\u0131klar\u0131n m\u00fckemmel ko\u015fullar alt\u0131nda (sabit s\u0131cakl\u0131k ve bas\u0131n\u00e7 de\u011ferlerinde) dahi s\u00fcrekli hareket halinde olu\u015funun sebebi olan, par\u00e7ac\u0131klar \u00fczerinde s\u0131v\u0131n\u0131n kendi molek\u00fcllerinin uygulad\u0131\u011f\u0131 \u015foklarSeddig taraf\u0131ndan yap\u0131lm\u0131\u015ft\u0131r. Bundan sonra bu problemi ele alan iki bilim adam\u0131ndan Perrin (di\u011feri Svedberg’dir.) ara\u015ft\u0131rmalar\u0131 sonucunda Einstein’\u0131n teorisinin deneyle m\u00fckemmel bir \u015fekilde uyu\u015ftu\u011funu g\u00f6stermi\u015ftir.
\n Jean Baptiste Jean Perrin (1926 Nobel aday\u0131), Avogadro say\u0131s\u0131 terimini 1909 y\u0131l\u0131nda bir makalesinde kullanm\u0131\u015f ve bu terimi ilk kez kullanan insan olmu\u015ftur. konusunda matematiksel bir teori ortaya atm\u0131\u015ft\u0131r. Bu konudaki ilk deneysel kan\u0131t Alman fizik\u00e7i.<\/p>\n","protected":false},"excerpt":{"rendered":"
Avogadro say\u0131s\u0131 veya Avogadro sabiti, bir elementin bir mol\u00fcndeki atom say\u0131s\u0131 ya da bir bile\u015fi\u011fin bir mol\u00fcndeki molek\u00fcl say\u0131s\u0131d\u0131r. 1 mol yani 12 gr Karbon12 elementindeki atom say\u0131s\u0131 deneysel olarak hesaplanarak 6.02214199×1023 [1] bulunmu\u015ftur. Say\u0131 bu alandaki katk\u0131lar\u0131ndan dolay\u0131 \u0130talyan bilim adam\u0131 Amedeo Avogadro’nun (1776\u20131856) ad\u0131 ile an\u0131l\u0131r. Tarih\u00e7e 1811 y\u0131l\u0131nda Avagadro, ayn\u0131 s\u0131cakl\u0131k ve …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1407,1403],"tags":[11588,4637,2261,2196],"class_list":["post-6172","post","type-post","status-publish","format-standard","hentry","category-fen-ve-teknoloji-odevleri","category-odevler","tag-atom-sayisi","tag-avogadro-sayisi","tag-element","tag-molekul"],"_links":{"self":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/6172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/comments?post=6172"}],"version-history":[{"count":0,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/posts\/6172\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/media?parent=6172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/categories?post=6172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.islamidavet.com\/kutuphane\/wp-json\/wp\/v2\/tags?post=6172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}