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氧气

氧气

  化学式量:32.00,无色无味气体,氧元素最常见的单质形态。熔点-218.4℃,沸点-183℃。不易溶于水,1L水中溶解约30mL氧气众享彩票。在空气中氧气约占21% 。液氧为天蓝色。固氧为蓝色晶体。常温下不很活泼,与许多物质都不易作用。但在高温下则很活泼,能与多种元素直接化合,这与氧原子的电负性仅次于氟有关

众享彩票   ZHUYAOYONGTU

众享彩票   (1)YELIANGONGYI:ZAILIANGANGGUOCHENGZHONGCHUIYIGAOCHUNDUYANGQI,YANGBIANHETANJILIN、LIU、GUIDENGQIYANGHUAFANYING,ZHEIBUDANJIANGDILEGANGDEHANTANLIANG,HAIYOULIYUQINGCHULIN、LIU、GUIDENGZAZHI。ERQIEYANGHUAGUOCHENGZHONGCHANSHENGDERELIANGZUYIWEICHILIANGANGGUOCHENGSUOXUDEWENDU,YINCI,CHUIYANGBUDANSUODUANLEYELIANSHIJIAN,TONGSHITIGAOLEGANGDEZHILIANG。GAOLULIANTIESHI,TIGAOGUFENGZHONGDEYANGNONGDUKEYIJIANGJIAOBI,TIGAOCHANLIANG。ZAIYOUSEJINSHUYELIANZHONG,CAIYONGFUYANGYEKEYISUODUANYELIANSHIJIANTIGAOCHANLIANG。

  (2)HUAXUEGONGYE:ZAISHENGCHANHECHENGANSHI,YANGQIZHUYAOYONGYUYUANLIAOQIDEYANGHUA,YIQIANGHUAGONGYIGUOCHENG,TIGAOHUAFEICHANLIANG。ZAILIRU,ZHONGYOUDEGAOWENLIEHUA,YIJIMEIFENDEQIHUADENG。

  (3)GUOFANGGONGYE:YEYANGSHIXIANDAIHUOJIANZUIHAODEZHURANJI,ZAICHAOYINSUFEIJIZHONGYEXUYAOYEYANGZUOYANGHUAJI,KERANWUZHIJINZIYEYANGHOUJUYOUQIANGLIEDEBAOZHAXING,KEZHIZUOYEYANGZHAYAO。

  (4)YILIAOBAOJIAN:GONGJIHUXI:YONGYUQUEYANG、DIYANGHUOWUYANGHUANJING,LIRU:QIANSHUIZUOYE、DENGSHANYUNDONG、GAOKONGFEIXING、YUZHOUHANGXING、YILIAOQIANGJIUDENGSHI。

  (5)其它方面:它本身作为助燃剂与乙炔、丙烷等可燃气体配合使用,达到焊割金属的作用,各行各业中,特别是机械企业里用途很广,作为切割之用也很方便,是首选的一种切割方法。

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