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


  • Biology 1200 ch 2 Flashcards - Quizlet
    Study with Quizlet and memorize flashcards containing terms like Which component of humans has the greatest percent of water?, A liquid that can dissolve substances is known as a(n), In a micelle, which portion of the amphipathic molecules are oriented toward the surface of the sphere? and more
  • 13. 9: Physical Properties of Alcohols; Hydrogen Bonding
    Alcohols are substantially less volatile, have higher melting points, and greater water solubility than the corresponding hydrocarbons (see Table 15-1), although the differences become progressively smaller as molecular weight increases Table 15-1: Comparison of Physical Properties of Alcohols and Hydrocarbons
  • Water as a Molecule | Water Knowledge For All
    When two water molecules are near each other—as is the case in the liquid and solid states of water, but not the gas state—the proximity of a negative O from one molecule to a positive H from a second molecule leads to a special kind of inter-molecular attraction, called a hydrogen bond (Figure 1)
  • Flexi answers - How do the melting and boiling points of water compare . . .
    Hydrogen bonds are stronger than the typical dipole-dipole and dispersion forces in other similar sized molecules, leading to higher melting and boiling points For example, water (H 2 O) has a molar mass of about 18 g mol, but it boils at 100°C and melts at 0°C
  • Why Does Water Have a Higher Boiling Point Than Alcohol Even Though . . .
    Water (H₂O) has a higher boiling point than most alcohols, such as ethanol (C₂H₅OH), despite being a smaller molecule This might seem counterintuitive at first, but it comes down to the nature of the molecular interactions at play The key factor here is hydrogen bonding
  • Water – Principles of Biology - Open Oregon Educational Resources
    Water is one of the more abundant molecules in living cells and the one most critical to life as we know it Approximately 60–70 percent of your body is made up of water Without it, life simply would not exist The hydrogen and oxygen atoms within water molecules form polar covalent bonds
  • Water: Properties and Biomolecular Structure - CliffsNotes
    Water has a dipole, that is, a separation of partial electrical charge along the molecule Two of oxygen's six outer‐shell electrons form covalent bonds with the hydrogen The other four electrons are nonbonding and form two pairs
  • WC CH 4 Flashcards - Quizlet
    Water molecules in the air tend to have ____ energy levels compared to liquid water molecules Increases with increasing number of water molecules Liquid water molecules have more energy, in general, than molecules of water vapor
  • The Structure of Water | CHEM101 ONLINE: General Chemistry - Lumen Learning
    Water is a polar molecule, as greater electron density is found around the more electronegative oxygen atom Polar molecules attract one another by dipole-dipole forces as the positive end of one molecule is attracted to the negative end of the nearby molecule
  • chapter 4 GEOG1112 Flashcards - Quizlet
    True or false: Liquid water molecules have more energy, in general, than molecules of water vapor Which of the following two describe the movement of water molecules between a solid and a vapor? In how many different forms does water exist in the atmosphere? The hydrogen atoms in a water molecule are arranged ______





中文字典-英文字典  2005-2009