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lara [203]
3 years ago
7

Please answer ASAP I really need it is it the 1st,2nd,3rd, or 4th Anwser

Chemistry
1 answer:
umka21 [38]3 years ago
4 0

Answer:

3rd

Explanation:

i just took the test

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When the reaction mixture is worked-up, it is first washed three times with 5% sodium bicarbonate, and then with a saturated nac
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Solution:

After the reaction of mixture is worked-up Washing three times the organic  with sodium carbonate helps to decrease the solubility of the organic layer into the aqueous layer. This allows the organic layer to be separated more easily.

And then the reaction washed by saturated NACL we have The bulk of the water can often be removed by shaking or "washing" the organic layer with saturated aqueous sodium chloride (otherwise known as brine). The salt water works to pull the water from the organic layer to the water layer.

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4 years ago
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Potential to Kinetic Energy. 
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3 years ago
Describe two ways oil enters the environment.
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2 years ago
Which of the following represents the ground state electron configuration for the Mn3+ ion? (Atomic number Mn = 25) 1s2 2s22p6 3
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Answer:

1s^22s^22p^63s^23p^63d^{4}

Explanation:

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The electronic configuration of the element, manganese is -  

1s^22s^22p^63s^23p^63d^{5}4s^2

To form Mn^{3+}, it will lose 3 electrons from the valence electrons and thus the configuration of the ion is:-

1s^22s^22p^63s^23p^63d^{4}

8 0
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