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11 July, 04:05

A stock solution with a concentration of 6.53 M is used to make 250 mL of a 1.38 M solution. How many milliliters of stock solution will you need?

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Answers (1)
  1. 11 July, 07:38
    0
    The answer to your question is 52 ml

    Explanation:

    Data

    Volume 1 = ?

    Concentration 1 = 6.63M

    Volume 2 = 250 ml

    Concentration 2 = 1.38 M

    To solve this problem use the dilution equation.

    Formula

    Volume 1 x Concentration 1 = Volume 2 x Concentration 2

    -Solve for Volume 1

    Volume 1 = Volume 2 x Concentration 2 / Concentration 1

    -Substitution

    Volume 1 = (250 x 1.38) / 6.63

    -Simplification

    Volume 1 = 345 / 6.63

    -Result

    Volume 1 = 52.04 ml

    -Conclusion

    I need 52 ml of the stock solution.
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