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
compounds查看　compounds　在百度字典中的解释百度英翻中〔查看〕
compounds查看　compounds　在Google字典中的解释Google英翻中〔查看〕
compounds查看　compounds　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:


  • What are structural isomers? | Socratic
    Structural isomers are compounds of the same chemical formula but different connectivities Organic chemistry provides rich opportunity for structural isomerism Even for a simple hydrocarbon, say "butane",C_4H_10, two structural isomers may be drawn which have the same formula but different connectivities: viz "n-butane", H_3C-CH_2CH_2CH_3, and "isobutane, " H_3C-CH (CH_3)CH_3 These
  • What is the formula of magnesium nitride, Mg_3N_2? | Socratic
    Consider the typical valencies of magnesium metal and dinitrogen in their compounds Magnesium is a Group 2 metal with 2 valence electrons that can be oxidized: Mg rarr Mg^ (2+) + 2e^- Dinitrogen is a gaseous non-metal that can be reduced to N^ (3-): Each nitrogen ATOM has 5 valence electrons, and this configuration can be reduced to N^ (3-) 1 2N_2 (g) + 3e^ (-)rarrN^ (3-) Since typically non
  • What are some examples of ionic compounds? + Example - Socratic
    Lets take the ionic formula for Calcium Chloride, CaCl_2 Calcium is an Alkaline Earth Metal in the second column of the periodic table This means that calcium has 2 valence electrons it readily gives away in order to seek the stability of the octet This makes calcium a Ca^(+2) cation Chlorine is a Halogen in the 17th column or p^5 group Chlorine has 7 valence electrons It needs one
  • Site Map - Ionic Compounds Questions and Videos | Socratic
    How do ionic compounds conduct electricity in water? How do ionic compounds dissolve? Is it possible to distinguish between ionic and molecular compounds in terms of the basic units that each is composed of? Can you explain the formation of an ionic compound from zinc and chlorine?
  • Why do some ionic compounds have some solubility in water . . . - Socratic
    Ionic compounds are non-molecular; they do not have molecular boundaries Ionic compounds are non-molecular; they do not have molecular boundaries In the solid-state, each particle, each ion, is bound electrostatically to every other counterion in the lattice, and repelled by every ion of the same charge If you sum all these attractions and repulsions up (which can certainly be done
  • Question #5fed7 + Example - Socratic
    Compounds that contain carbon, hydrogen, and oxygen are organic In living things, organic compounds are often called biomolecules, but they are still organic Carbon and hydrogen are found in all organic compounds and are called hydrocarbons However, sometimes the hydrogen atoms are replaced by atoms of other elements For example, methane, "CH"_4, can react with chlorine and produce carbon
  • I need help understanding this question. I know that is NOT . . . - Socratic
    a True All organic compounds contain at least one C-H bond (though the H atom (s) can be replaced by another element; for example CH4 can become CCl4) CO and CO2 are not organic because they do not contain hydrogen b True The elements that compose organic compounds are covalently bonded c True As you indicated, organic molecules in living systems include carbohydrates, lipids
  • Question #52cc0 - Socratic
    Sulfur dibromide A covalent compound is formed when two or more atoms share electrons located in their outermost shells, i e valence electrons, to gain stability Covalent compounds are formed between elements that have relatively similar electronegativities, which implies that the bonding electrons each atom uses are shared in a relatively equal manner Nonmetals are the only elements
  • Why is water such a good solvent for dissolving ionic solids?
    Because water is a solvent that is capable of solvating cations, and to a lesser extents anions Of course, not all ionic compounds are soluble in water Especially, with dications, or dianions, phosphates, and carbonates, and oxides etc , and here we observe that the electrostatic force of attraction SHOULD be greater given Coulomb's law Water is a dipolar, protic solvent, that is capable
  • Site Map - Oxidation Numbers Questions and Videos | Socratic
    How do you find an oxidation number of an element in a compound? How do you find oxidation numbers of complex ions? How do you find oxidation numbers of compounds? How do you find oxidation numbers of coordination compounds? How can you find oxidation numbers of transition metals? What is the oxidation number of Carbon in #Na_2C_2O_4#?





中文字典-英文字典  2005-2009