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2 years ago

What types of atoms typically form covalent bonds?

Chemistry

1 answer:

morpeh [17]2 years ago

8 0

Answer:

D. Nonmetals with nonmetals, because of difference in electronegativity is below 1.7

Explanation:

The types of atoms that typically form covalent bonds are non-metals with non-metals because of the difference in their electronegativity which is below 1.7.

In some instances, the difference can even be zero when dealing with homonuclear substances.

Covalent bond are formed between two or more atoms having low electronegativity differences between them.
Each of the atoms share their valence electrons to be able to mimic the noble gases.
The participating atoms will put down an unpaired electron to be used in forming a shared pair of electrons between them.

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2 years ago

What mass of NH3 can be made from 35.0g of N2?

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2 years ago

Read 2 more answers

The pK1, pK2, and pKR of the amino acid lysine are 2.2, 9.1, and 10.5, respectively. The pK1, pK2, and pKR of the amino acid arg

almond37 [142]

Answer:

pH 9,8 is likely to work best for this separation

Explanation:

Ion exchange chromatography is a chemical process where molecules are separated by affinity to an ion exchange resin. To separate different aminoacids you must use the isoelectric point (That is the pH where the aminoacid will be in its neutral form).

For lysine, PI is:

$pH = \frac{1}{2} (9,1+10,5) =$ 9,8

For arginine:

$pH = \frac{1}{2} (9,0+12,5) =$ 10,75

At pH = 9,8 lysine will be in its neutral form and will not be retain in the column but arginine will be in +1 charge being retained by the ion exchange resin.

Thus, <em>pH 9,8 is likely to work best for this separation</em>

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2 years ago

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Answer:

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