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svetlana [45]
3 years ago
9

Please help i will give extra points

Chemistry
1 answer:
steposvetlana [31]3 years ago
4 0

Answer:

D) It is a solid

Explanation:

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What is the net charge of the peptide arg-ala-phe-leu at ph 8?
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The structure of this oligopeptide is attached:

It consists of arginine - alanine - phenylalanine and leucine

From the picture we can see that N terminus charge is +1
Also Arginine is considered as basic amino acid with charge +1
C terminus charge is -1

At pH = 8, the whose pKa are less than pH will be deprotonated and the net charge will be +1 

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When the solution is stirred , the molecule's kinetic energy and thus the rate of reaction increases.

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Answer:

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The mass of Carbon is 12 g/mol and the mass of oxygen is 16 g/mol. What is the approximate percent composition by mass of CO2 (f
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