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Effectus [21]
3 years ago
8

Please help me I’ll mark you the brainiest! Please do NOT answer if you don’t know it.

Chemistry
1 answer:
Lorico [155]3 years ago
8 0

Answer: It is B

Explanation:

EAZYYYY

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Name different types of nutrients that our muscles need.
alexandr402 [8]

Answer:

Biotin. ...

Iron. ...

Vitamin C. ...

Selenium. ...

Omega 3. ...

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Vitamin B12.

Explanation:

4 0
2 years ago
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A 35.0 mL sample of 1.00 M KBr and a 60.0 mL sample of 0.600 M KBr are mixed. The solution is then heated to evaporate water unt
Katarina [22]

Answer: The molarity of KBr in the final solution is 1.42M

Explanation:

We can calculate the molarity of the KBr in the final solution by dividing the total number of moles of KBr in the solution by the final volume of the solution.

We will first calculate the number of moles of KBr in the individual sample before mixing together

In the first sample:

Volume (V) = 35.0 mL

Concentration (C) = 1.00M

Number of moles (n) = C × V

n = (35.0mL × 1.00M)

n= 35.0mmol

For the second sample

V = 60.0 mL

C = 0.600 M

n = (60.0 mL × 0.600 M)

n = 36.0mmol

Therefore, we have (35.0 + 36.0)mmol in the final solution

Number of moles of KBr in final solution (n) = 71.0mmol

Now, to get the molarity of the final solution , we will divide the total number of moles of KBr in the solution by the final volume of the solution after evaporation.

Therefore,

Final volume of solution (V) = 50mL

Number of moles of KBr in final solution (n) = 71.0mmol

From

C = n / V

C= 71.0mmol/50mL

C = 1.42M

Therefore, the molarity of KBr in the final solution is 1.42M

5 0
2 years ago
Which reactions are exothermic?
poizon [28]

Answer:

Explanation:

exothermic reactions are the reactions which involve the release of energy.

the energy released can be of any forms ,for example heat,light .

all the combustion reactions are exothermic reactions

4 0
3 years ago
The process in which rock fragments freeze to the bottom of a glacier and then are carried away when the glacier moves is called
guapka [62]
Im pretty sure its called plucking
3 0
3 years ago
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If an atom gains an electron, what overall charge will it have?
Oliga [24]

Answer:

The atom will have a negative charge.

Explanation:

Electrons are subatomic particles with a negative charge, protons are subatomic particles with a negative charge, and neutrons have no charge. When a neutral atom's balance is disrupted by an extra electron, the atom  becomes negatively charged.

4 0
2 years ago
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