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kipiarov [429]
2 years ago
10

How many neutrones does the isotope n-14 have

Chemistry
1 answer:
exis [7]2 years ago
4 0

Answer: 7

Explanation:

Proton/atomic number + Neutron = atomic mass

atomic mass - protons/atomic number = neutrons

14 - 7 = 7

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What is the net charge of the peptide arg-ala-phe-leu at ph 8?
adell [148]
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 

So the net charge of this oligopeptide is +1 at pH = 8 

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3 years ago
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Leona [35]

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Explanation:

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2 years ago
If a decrease in temperature accompanies a reaction, what occurred?
Sliva [168]

Answer:

Energy was released

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Perform the following metric conversions: Please explain bc I really dont get it at ALL !!!!
makkiz [27]

Answer:

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1 nm = 1000 pm

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1 hectometer is equal to 10,000 centimeter.

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1 µg = 1000000 pg

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7 0
3 years ago
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