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makvit [3.9K]
3 years ago
13

HELP ASAP!!

Chemistry
2 answers:
horsena [70]3 years ago
8 0

Answer:

B

Explanation:

I did this b4 ‍♀️

bija089 [108]3 years ago
5 0
B because i did this before
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BRAINLIEST FOR FREE AND FREE 20 POINTS FOR HELPING ME!!!
natita [175]

Answer :electrostatic repulsion.

EXPLANATION

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Use the reading below to answer the question.
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Answer: I think it is amount of rainfall

Explanation:

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The p K a of lysine's carboxyl group, amino group, and side chain are 2.2, 9.0, and 10.5, respectively. If lysine is in a pH 13
Inessa [10]

Answer:

The net charge on each lysine molecule would be -1.

Explanation:

  • <u>When the pH is above 2.2</u> the deprotonated form of the carboxylic acid is more present, while the amino group and side chain (which is also amino) remain protonated (with a positive charge):

R-COOH ↔ R-COO⁻

R-NH₃⁺

R'-NH₃⁺

Net charge = +1

  • <u>When pH is above 9.0</u>, the carboxyl group remains deprotonated, while the amino group is deprotonated and the side chain is protonated:

R-COOH ↔ R-COO⁻

R-NH₂

R'-NH₃⁺

Net charge = 0

  • <u>When pH is above 10.5</u>, the carboxyl group remains deprotonated, while both the amino group and the side chain are deprotonated:

R-COOH ↔ R-COO⁻

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Net charge = -1

So at pH=13 (which is above 10.5) the net charge is -1.

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3 years ago
DIRECTIONS: Underline the selected word item that best completes the statements.
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Explanation:

(<u>Climate</u>, Weather) is an overall atmospheric condition of a place of 30 years and more while (Climate,<u>Weather</u>) is a condition for a short period of time.

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3 years ago
In an endothermic reaction...
kondaur [170]

Answer:

to hard im only in year 8

Explanation:

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3 years ago
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