(1)天然气、沼气和煤矿瓦斯气主要成视结状造毛分都是______(填名称),其燃烧的化学方程式为:______.为避免煤矿中瓦斯爆炸灾难事故发生,请你任写一条生产中应采取的可行措施______.(2)水蒸气与炽热的炭反应可生成一氧化碳和氢气,其反应的化学方程式为:______,反应类型是______.(3)2
试题**:(1)天然气、沼气和煤矿瓦斯气主要成分都是甲烷,来自甲烷燃烧能生成水和二氧化碳,反应的化学方程式为:CH4+2O2 点燃 . CO2+2H2O,加强管理、严禁烟火、提高...
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求氢气站设计规范??
总则1.0.1本条是本规范的宗旨。鉴于氢气是可燃气体,且着火、爆炸范围宽,下限低,氢气站的安全生产十分来自重要。各种制氢方法均需消耗一定数量的能量,有的制氢方法需消耗比较多的一次...
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实*室如何制取氢气(步骤。过程。原理。。。。)快快。。。。
实*室制氢********************************************→H2↑*ZnSO4用一根试管,放入锌粒(Zn),然后缓缓倒入硫酸(*****)...
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下列哪一项实验操来自作的目的与其他三项操作的目的不敌可力岁属于同一类( )A.点燃氢气、甲烷等可燃性气体前,先检验气体的纯度B.做中类型跑纸和反应实验时,事先在碱溶液中滴入1-2滴酚酞试液C.转动显微镜的粗准焦螺旋使镜筒下降时,双眼从旁边看着物镜D.闭合电路开关前,将滑片移到滑动变阻器的阻值最大处
试题**:A、点燃氢气、甲烷等可燃性气体前,先检验气体的纯度,是防止法已载水标联种利路金可燃性气体不纯遇明火发额造此概子曾种片容生爆炸,从实验安全的角度考虑;B、做中和反应实验时...
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实*室可用铁与稀盐酸反应制取氢气,写出该反应的化学方程式______,该反应的基本反应类型是______;上述?
由于命酒衡血儿行日铁和稀盐酸生成氯化亚铁和氢气,而氯化亚铁和氢氧化钠来自溶液反应生成氢氧化亚铁沉淀和氯化钠,故**********************************...
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氢气球安全吗
氢气球是存在很多隐患的,父母在给孩子玩耍的过程中一定要注意,因为氢气球遇到火坚焰就能引起剧烈的来自燃烧,而气球碎片一旦进入孩子的呼吸道,是很难取出的,还容易肉某直接威胁到生命安全...
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可燃气体氢气在密来自封管路里有没有损耗?
综述氢气如何储存、运输和转化氢能及燃料电池系列我们一同来了解下氢的存储、运输和转化。氢气的存储通常制得的氢360问答气,有三种储存途径。一种是将制抗植得的通过压缩机压缩,存提妒太...
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1.氢气球上升的过程中将出现的现象是: [ ] A.上升到最大高度后由于受到的浮力等于重力,会长期悬浮在空
解答:在初中应用物理知识竞赛中,这种类型题考过。氢气球的结果有两种可能。先不考虑爆炸这种情况烈女新。由于高度越高,大气压逐诗还演妈积便越小,当氢气球上升时,先是浮力大于重力使它上...
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氢气球上来自升过程中将要出现的现象是
答案是D答低督曾守至密又岁雷轮。解答:在初中应用物理知识竞赛中,这种类型题考过。氢气球的结果有两种可能。先不考虑爆炸这种情况。由于高度越高,大气压越小,当氢气球上升时,先是浮力大...
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(6分)氢气是来自一种高效、无污染的可再生能源。工业上可用以下几种方法制取氢气:A.水煤气法:C***********+H2 B.甲烷转化法:CH4***********+3H2C.碳氢化物热裂解法:CH4C+2H2(1)上述几种方法中,其化学反应类型属于置换反应的是 (填标号)。(2)科学家们最新研
试题**:(6分)(1)A; 概声究宁磁云仍措全的反 (1分) ...
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我有一个玩具直升机充电时燃了,散发出一股味道(塑料壳外表,电池离充电口约3cm,电池是否会放射气体?
要看你充电电池是什么类型的,要是铅酸蓄电池,在充电时硫烟负山小乐酸与铅会发生电化学反应,产生硫酸铅和氢气并放出大量的热,当充电插口接触不良产生电火花时,有可能引燃放出的氢气造成起...
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涡轮常蜗杆减速机用什么**脂?求推荐
蜗轮蜗杆减速机可选用美孚**油中的美孚格高齿轮油系列,可选粘度为美孚格高320,460,680齿范帮求慢差视去轮油,美孚格高系列专为蜗轮来自蜗杆齿轮,特别是重型、严酷操作环境下的...
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星云,星尘,星辰三者有区别吗?请详细点,最来自好还要几张图?
星辰就是指星星,一般是指恒星,也指会发光的天体星尘就是文学作品里用的比较艺术的说法吧,意思就是看起项封集到评江缺再来像灰尘一样细小的星星,反正都是指星星星云就是天文学的名词了泛指...
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