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Water can form hydrogen bonds with itself and with solutes.
发布时间:
2024-06-24 09:16:50
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相关试题
1.
Which of the following is NOT a property of water that makes water an excellent solvent?选项: A:Water molecules are of small size.; B:Water molecules can form hydrogen bonds.; C:Water molecules are nonpolar.; D: None
2.
Water molecules readily form hydrogen bonds with other polar molecules, and when they encounter nonpolar molecules they must form hydrogen-bonding networks with neighboring water molecules. Which of the following molecules will cause a “cage” of water to form 选项: A、2-methylpropane B、acetone C、methanol D、urea
3.
The nearly tetrahedral arrangement of the orbitals about the oxygen atom allows each water molecule to form hydrogen bonds with as many as ____ neighboring water molecules.
4.
Because water is absent from the interior of the bilayer, atoms that are part of the polypeptide backbone are thus driven to form hydrogen bonds with one another.
5.
Ethanol is soluble in water. The best explanation for this is 选项: A:ethanol molecules form hydrogen bonds with water molecules.; B:ethanol molecules form London (dispersion) forces with water molecules.; C:ethanol molecules form permanent dipole interactions with water molecules.; D:ethanol and water are miscible liquids.
6.
【单选题】Ice is _____ than water because _____. A.less dense; frozen water maintains more hydrogen bonds than liquid water B.less dense; liquid water maintains more hydrogen bonds than frozen water C.dens
7.
【单选题】Formation of a lipid bilayer is energetically favorable。 How does this arrangement result in higher entropy for the system, and thus make bilayer formation energetically favorable? 选项: A:Polar head groups form a hydrogen-bonding network at the interface with water。 B:Water molecules form cagelike structures around hydrophobic molecules。 C:Hydrogen bonds form between neighboring polar head groups in the bilayer。 D:Fatty acid tails are highly saturated and flexible。
8.
(单选题,5.0分) Formation of a lipid bilayer is energetically favorable. How does this arrangement result in higher entropy for the system, and thus make bilayer formation energetically favorable? 选项: A: Polar head groups form a hydrogen-bonding network at the interface with water. B: Water molecules form cagelike structures around hydrophobic molecules. C: Hydrogen bonds form between neighboring polar head groups in the bilayer. D: Fatty acid tails are highly saturated and flexible.
9.
Manufacturers of hydrogen generators have developed methods to use lower amounts of electricity to split water into hydrogen. Different electrolytes or catalysts are used in _______ the bonds between hydrogen and oxygen atoms that make up water.选项: A:loosening B:strengthening C:separating D:splitting
10.
Achemist can _the oxygen from hydrogen in water
11.
A chemist can _the oxygen from hydrogen in water.
12.
Which of the following bonds can be treated as weak bonds or secondary bonds? 选项: A:dipole–dipole interactions; B:the London dispersion force; C:hydrogen bonding ; D:metallic bonding
13.
The following bonds can be treated as weak bonds or secondary bonds. 选项: A:dipole–dipole interactions; B:the London dispersion force; C:hydrogen bonding; D:metallic bonding
14.
The following bonds can be treated as weak bonds or secondary bonds. 选项: A:dipole–dipole interactions; B:the London dispersion force; C:hydrogen bonding; D:metallic bonding
15.
A chemist can _the oxygen from hydrogen in water.A.drawB.isolateC.associateD.split
16.
A ____ can be a bound root, a free morpheme, or a derived form itself to which a derivational affix can be added.
17.
Carbon atoms can form very stable single bonds with up to ()other carbon atoms
18.
A chemist can analyze water into two ____________gases, hydrogen and oxygen 选项: A:colorful ; B:colorless ; C:colored ; D:color
19.
Which of the following technologies can be used in drinking water disinfection:( )选项: A:Hydrogen peroxide; B:Chlorine; C:Fluorine; D:Permanganate; E:Ozone
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