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bezimeni [28]
3 years ago
14

All of the following are important properties of prokaryotes except A. prokaryotes are often decomposers and enable recycling of

nutrients. B. prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms. C. prokaryotes are used to make many products for humans. D. prokaryotes form the base of many food chains, especially those found within the open ocean.
Chemistry
2 answers:
Sladkaya [172]3 years ago
8 0
The answer to this is B.
luda_lava [24]3 years ago
4 0

correct answer is B just took the test

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Answer:

1) increases

2) smaller

Explanation:

Generally, as electron- electron repulsion increases and more electrons are added to the atom while Z is held constant, the electron cloud size is increased. The size of the anion formed is usually measured as the size of this extended electron cloud. Hence the larger electron cloud means a larger anion size compared to the size of the neutral atom.

For a cation, the converse is true and the cation is found to be smaller than the neutral atom.

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Which pair of atoms has the highest electronegativity difference?
zavuch27 [327]
The best way to accurately determine the pair with the highest electronegativity difference is by using their corresponding electronegativity values. For the each of the choices, the difference is:

A. H-S = 2.5 - 2.1 = 0.4
B. H-Cl = 3 - 2.1 = 0.9
C. N-H = 3 - 2.1 = 0.9
D. O-H = 3.5 - 2.1 = 1.4
E. C-H = 2.5 - 2.1 = 0.4

As show, D. has the highest difference. Without looking at their values, you can also determine the pair with the highest difference by taking note of the trend of electronegativity on the periodic table. Electronegativity increases as you go right a group and up a period. This makes oxygen the most electronegative element among the other elements paired with hydrogen.
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The answer for question 14 would be C and question 15 is B

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