水(化学式:H2O)是由氢、氧两种元素组成的无机物,在常温常压下为无色无味的透明液体。水是地球上最常见的物质之一,是包括人类在内所有生命生存的重要资源,也是生物体最重要的组成部分。水在生命演化中起到了重要的作用。人类很早就开始对水产生了认识,东西方古代朴素的物质观中都把水视为一种基本的组成元素,水是...
A. Hydrogen Oxide B. Hydroxide Oxide C. Hydronium Oxide D. Dihydrogen Monoxide 相关知识点: 试题来源: 解析 D。“H2O”是“Dihydrogen Monoxide”的缩写,即水。选项 A“Hydrogen Oxide”表述不准确;选项 B“Hydroxide Oxide”错误;选项 C“Hydronium Oxide”也不对。只有选项 D 是水的正确表述。
【H2O】Guess what is this 只看楼主收藏回复 cccplzw 配位化学 8 送TA礼物 1楼2012-08-04 11:53回复 gh28qs 量子化学 12 固体加这么多。。 来自Android客户端2楼2012-08-04 11:59 收起回复 永恒丶一秒天堂 地球化学 7 步步高化学实验室 来自Android客户端3楼2012-08-04 12:03 收起回复 ...
Air contains water in a gaseous form called Dry ice is a solid form of which gas? What is the scientific name for natural gas? What is the process to turn a solid into gas? What is the chemical name for water? Describe the transition from gas to liquid. ...
百度试题 结果1 题目H2O是水的化学符号 H2O is the ( )( )( )water 把What made you give up 相关知识点: 试题来源: 解析 1.chemical symbol of 2.what is made to give up English by you (改为被动后不定式省略的to要加上) 反馈 收藏
most of the conductance will take place only between the acetates formed (and the free hydrogen ions). The resistance of a solution of water with weak acids will only go down to 1.4 Ohm-Meters, which is 7X larger than the resistance of sea water - incorrectly called simply "salt water"...
What is H2O in commonly known ashemical substances? 2019-07-16 02:19:16 76 喜欢下载分享 声音简介 标题是答案,部分因为字数限制可发挥脑洞去听答案哦~(可微信或者公众号索取题目文字版),各位同学们加油练习哦!!!会一直给你们保持更新的!!! 重要RS内容 小盘给你悄悄带来的小福利哦~ 另有定期更新的鸡精和...
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Question: Given: H2O(l)→H2O(g),ΔH°=40.7K at 373 KWhat is the entropy change in the system ( ΔS ) when one mole of water vaporizes at 100°C and a pressure of one atmosphere?Hint ΔSsystem+ΔSsurrounding =Δ...
The Lewis dot structure for H2O: is: This is derived by folowing 5 general steps for writing Lewis dot structures. First, add up the total... See full answer below. Learn more about this topic: Lewis Dot Structure | Definition, Diagrams & Examples ...