英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
2O查看　2O　在百度字典中的解释百度英翻中〔查看〕
2O查看　2O　在Google字典中的解释Google英翻中〔查看〕
2O查看　2O　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Whats the difference between 2O and O2 [duplicate]
    $\ce {2O}$ is basically two atoms of oxygen, unbonded and separate On the other hand, $\ce {O2}$ is oxygen molecule, which is more commonly called oxygen gas
  • What is the difference between O O2 - Chemistry Stack Exchange
    What is the difference between $\ce {O}$ and $\ce {O2}$ If C is carbon and then why $\ce {O2}$ is oxygen
  • diH2O, dH2O, and DI H2O. What do they mean?
    What do $\ce {diH_2O, dH_2O}$, and $\ce {DI H_2O}$ mean? I'm not asking for a description of deionized water and distilled water I'm asking what the three abbreviations formulas mean In other wor
  • Reaction of glucose acetal with acetic anhydride
    Starting from any cyclic form of glucose, there are two key ways to form the acetal in sequence (i) Taking glucopyranose as a starting point, here is a reaction scheme: Initially, you could argue that you can protonate either the free hydroxy group (left-hand path) or the cyclic oxygen (right-hand path) The two paths give you either of the two aldehydes in the third row The left-hand path
  • What is the IUPAC name of N2O? - Chemistry Stack Exchange
    What is the IUPAC name of $\ce {N2O}$? I would usually say it's "dinitrogen monoxide", but its name is written as "dinitrogen oxide" in my textbook I don't understand how that
  • CH4 + O2 = gt; CO2 + 2H2, whats wrong with it?
    There's nothing wrong It's incomplete combustion It is one of a number of oxidizing reactions that can and will be occurring if you are burning this hydrocarbon in an oxygen-restricted environment But the dominant reaction will be the one where the lowest energy state is reached So you will likely wind up with one CO molecule, one water molecule and one hydrogen molecule instead
  • Does water have a chemical name? - Chemistry Stack Exchange
    Does water have a chemical name? If so, what is it? P S I checked up the web and got all sorts of crazy answers like dihydrogenmonoxide, oxidane, hydrogendihydride etc Please validate
  • electrochemistry - Why is the water reduction of oxygen favored in . . .
    $\ce {O2 + 2e^- -> 2O^-}$ Or this? $\ce {O2 + 2e^- -> HOOH}$ 2) From the above we can deduce that water is the product; water is pretty stable in either acidic or basic medium - i e it won't react to a large extent with either hydronium or hydroxide ion Plus the oxygen in water has a -2 oxidation state So if we look at our skeleton half
  • Na2HPO4 is amphoteric: write the two reactions
    $\\ce{Na_2HPO_4}$ is amphoteric, which means it can act as a base or as a acid depending on which substance they react with This is the reaction in which disodium phosphate appears to be an acid:
  • Finding the formula of an alcohol with a given molecular mass
    The general formula of alcohol is CnH2n+2O If you know the individual atomic masses of C, H and O, you can do some simple math to get your answer





中文字典-英文字典  2005-2009