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Volumetric measuring equation?

  1. Apr 28, 2014 #1
    I'm looking for a set of equation(s) to solve the following problem:

    Given 5 mg of a substance dissolved in 30 ml of liquid, how much of the substance will be present in 1 drop of water of the solution? Given one drop of water is equal to 0.050 ml.

    Thank you. This is not homework, just a request to know the appropriate equation to solve the above question.
  2. jcsd
  3. Apr 28, 2014 #2


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    Gold Member

    If 5mg get's dissolved in 30ml of water,what is the mass of water in 0.05ml of water?
    Hint: 30ml is 5,what is 0.05ml?
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