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meriva
2 years ago
5

PLEASE HELPPPP!!! IM BEING TIMED

Chemistry
2 answers:
Mrac [35]2 years ago
8 0

Answer:

B)

Explanation:

This should be the correct answer, lmk if it's not

zvonat [6]2 years ago
6 0

Answer:

I believe D is the correct answer

Explanation:

I am doing the same test right now and this was the answer on mine

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A stock solution of sodium sulfate NaSO4 has a concentrate of 1.00 m. The volume of this solution is 50 ml. What volume of 0.25
mylen [45]
<h3>Answer:</h3>

200 mL

<h3>Explanation:</h3>

Concept tested: Dilution formula

We are given;

  • Concentration of stock solution as 1.00 M
  • Volume of the stock solution as 50 mL
  • Molarity of the dilute solution as 0.25 M

We are required to calculate the volume of diluted solution;

  • The stock solution is the original solution before dilution while diluted solution is the solution after dilution.
  • Using the dilution formula we can determine the volume of diluted solution;

M1V1 = M2V2

Rearranging the formula;

V2 = M1V1 ÷ M2

     = (1.00 M × 50 mL) ÷ 0.25 M

     = 200 mL

Therefore, a volume of 200mL of 0.25 M solution could be made from the stock solution.

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3 years ago
The na+/k+ pump removes ______ na+ ions and adds _______ k+ ions.
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