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href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-huagong_gongyeqiti/">工業(yè)氣體</a>?<a href="http://www.cdcfah.com/cp/third-gongyeqiti_danqi/">氮氣</a>?黃南州新型氮氣廠家實力雄厚真誠推薦海東市平安區(qū)永安氣體供應(yīng)</p><div id="xmgi9je" class="leftbox clearfix"><h1>黃南州新型氮氣廠家實力雄厚真誠推薦海東市平安區(qū)永安氣體供應(yīng)</h1><div id="7ofhgx3" class="proBig"><div id="haxk97u" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/JC004/637263497578007813/3277810.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="y7crkgs" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/JC004/637263497578007813/3277810.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vfsp94f" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>青海省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>黃南州新型氮氣廠家實力雄厚</p><p><span>***更新：</span>2020-06-04 01:07:01</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wkhjd8n" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">海東市平安區(qū)永安氣體有限公司</a></p><p><span>聯(lián)系人：</span>羅崇山</p><p><span>郵箱: </span>794819198@qq.com</p><p><span>電話: </span>15117121314</p><p><span>傳真: </span>0972_5925363</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0972-5925363</p><p><span>地址: </span>平安區(qū)古城鄉(xiāng)新莊爾村</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="0gsp9yt" class="page-proshow02"><p class="title">詳細說明</p><div id="kykxwfb" class="box"><p><p style="text-indent:25px">由于單質(zhì)（N2）在常況下異常穩(wěn)定，人們常誤認為氮是一種化學(xué)性質(zhì)不活潑的元素。實際上相反，元素氮有很高的化學(xué)活性，黃南州新型氮氣廠家實力雄厚。N的電負性（3.04）僅次于F，黃南州新型氮氣廠家實力雄厚、O、Cl和Br，說明它能和其它元素形成較強的鍵。另外單質(zhì)N2分子的穩(wěn)定性恰好說明N原子的活潑性。問題是人們還沒有找到在常溫常壓下能使N2分子活化的有利條件，黃南州新型氮氣廠家實力雄厚。但在自然界中，植物根瘤上的一些細菌卻能夠在常溫常壓的低能量條件下，把空氣中的N2轉(zhuǎn)化為氮化合物，作為肥料供作物生長使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黃南州新型氮氣廠家實力雄厚" src="https://tyunfile.71360.com/UploadFile/JC004/637263497578007813/3277810.jpg"></div><p style="text-indent:25px">氮氣占大氣總量的78。12%（體積分數(shù)），在標準情況下的氣體密度是1。25g/L，氮氣在水里溶解度很小，在常溫常壓下，1體積水中大約只溶解0。02體積的氮氣。它是個難于液化的氣體。在水中的溶解度很小，在283K時，一體積水約可溶解0。02體積的N2,氮氣在極低溫下會液化成無色液體，進一步降低溫度時，更會形成白色晶狀固體。在生產(chǎn)中，通常采用黑色鋼瓶盛放氮氣?；瘜W(xué)性質(zhì)氮氣分子的分子軌道式為,對成鍵有貢獻的是三對電子，即形成兩個π鍵和一個σ鍵。對成鍵沒有貢獻，成鍵與反鍵能量近似抵消，它們相當于孤電子對。由于N2分子中存在叁鍵N≡N，所以N2分子具有很大的穩(wěn)定性，將它分解為原子需要吸收941。69kJ/mol的能量。N2分子是已知的雙原子分子中**穩(wěn)定的，氮氣的相對分子質(zhì)量是28。氮氣結(jié)構(gòu)式；而且氮氣不易燃燒且不支持燃燒。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黃南州新型氮氣廠家實力雄厚" src="https://tyunfile.71360.com/UploadFile/JC004/637263497575703125/6953189.jpg"></div><p style="text-indent:25px">氮氣在使用的過程中還有一些注意事項，氮氣是一種無色、無味、不燃燒的儲存于氣瓶中的高壓氣體。當其含量增加導(dǎo)致氧氣含量低于19.5%時有可能引起窒息。需配備自吸式呼吸面具。瓶裝氮氣產(chǎn)品為高壓充裝氣體，使用時應(yīng)經(jīng)減壓降壓后方可使用。包裝的氣瓶上均有使用的年限，凡到期的氣瓶必須送往有部門進行檢驗，方能繼續(xù)使用。每瓶氮氣在使用到尾氣時，應(yīng)保留瓶內(nèi)余壓在0.5MPa，**小不得低于0.25MPa余壓，應(yīng)將瓶閥關(guān)閉，以保證氣體質(zhì)量和使用方法的準確性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黃南州新型氮氣廠家實力雄厚" src="https://tyunfile.71360.com/UploadFile/JC004/637263497576162110/6776579.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/136060.html</p></div></div></div></div></div><div id="j77wofh" class="page-right twoColRt"><div id="icurgn7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="eb2qcew" class="recomPic likePro"><a 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