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avanturin [10]
3 years ago
8

Pls help. the picture is above. thanks!!

Chemistry
1 answer:
Mrac [35]3 years ago
8 0
I believe it is none of the above are polar
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How does a heat affect the chemical reaction? ​
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Determine if these molecules and ion are polar.
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a. Polar

b. Polar

c. Non-polar

d. Non-polar

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c. PCl_5 is non-polar, as the central atom, phosphorus, doesn't contain any lone pairs, all the dipole moments cancel out: two dipole moments in the vertical plane, P-Cl, and three P-Cl dipoles in the horizontal plane within a trigonal bipyramidal shape.

d. CF_4 is non-polar, since it's a tetrahedral molecule with no lone pairs on carbon atom, all four C-F dipole moments cancel out to yield a net 0 dipole moment.

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How does the density of protostars compare to other stars?
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Protostars are less dense than other stars.  

Explanation:

Protostars are very young ‘stars’ made from hydrogen clouds that are beginning to coalesce and collapse under their weight. The hydrogen has not even begun fusing. Therefore, they are mainly made of hydrogen which is the lightest element in the universe.

Stars, however, have begun fusing hydrogen to other heavier elements like helium, carbon, oxygen, and iron. The elements are much heavier than hydrogen making other stars much denser than protostars.

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