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emmasim [6.3K]
3 years ago
11

Which one of the following exhibits dipole-dipole attraction between molecules?

Chemistry
1 answer:
Maslowich3 years ago
8 0

Answer: No one. All these molecules are nonpolar.

Explanation: Dipole-dipole attractions occur only between polar molecules.  To know if a molecule is polar, you have to observe if their dipole moment (μ) is different from 0. You can do this by observing the vectors of charge in each molecule.

In all the molecules of the alternatives, the overall molecule is nonpolar (the sum of the vectors is equal to 0). So, these molecules are attracted only by induced dipole forces (weak forces that exist between nonpolar molecules).

For F2, this molecule is nonpolar because is composed of equal atoms. So, there isn't an atom which pulls the charge for itself.

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Which statement describes the distribution of charge in an atom?
miv72 [106K]

The correct answer is:

A positively charged nucleus is surrounded by one or more negatively charged electrons

The explanation:

when:

proton is a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.

neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The particle derives its name from the fact that it has no electrical charge

electron is a negatively charged subatomic particle. It can be either free (not attached to any atom), or bound to the nucleus of an atom .  

so, , there are positively charged protons and zero-charged neutrons in the nucleus of an atom. Therefore, the nucleus is positively charged, Surrounding the nucleus, the electrons have negative charge. 

Thus, the correct answer is (3): A positively charged nucleus is surrounded by one or more negatively charged electrons is correct.

3 0
3 years ago
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A mixture of two gases has a total pressure of 5.7 atm . If one gas has a partial pressure of 4.1 atm , what if the partial pres
Mrrafil [7]
If the two gases has a total pressure of 5.7 atm and one of the gases has a partial pressure of 4.1 the the other one has the pressure of 1.6

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3 years ago
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How are oxidation-reduction reactions related to how you use energy?
Tems11 [23]

Answer:

In oxidation reduction reactions, one species gets reduced by taking on electron(s) and another species gets oxidized by losing electrons. They also flow by a wire

Explanation:

8 0
2 years ago
What is 2.57 g/cm = ? kg/L ?
shepuryov [24]

Answer: 2.7kg/L

Explanation:

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5 0
3 years ago
The empirical formula of a group of compounds is CHCl. Lindane, a powerful insecticide, is a member of this group. The molar mas
Sergeeva-Olga [200]

Answer:

<h2>D) 6</h2>

Explanation:

since,   n = molar mass / empirical formula mass

   Empirical formula mass = Total mass of atoms present in empirical formula

                       CHCl = 12+1+35.5

                                = 48.5

 Given, Molar mass = 290.8 g.

           So,        n = 290.8/48.5

                           = 5.995 , that is approx  6.

        So, Molecular formula = n × Empirical formula

                                           = 6 × CHCl

                                           = C_{6}H_{6}Cl_{6}

       So,   Number of C = 6

3 0
3 years ago
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