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Molarity of diluted solutions

  1. Apr 23, 2007 #1
    1. The problem statement, all variables and given/known data
    A student accidentally spills 227 mL of distilled water into a beaker containing 0.5 M potassium nitrate solution
    A) What is the new molarity?

    2. Relevant equations
    Molarity = moles/liter

    3. The attempt at a solution
    I'm just REALLY confused, and I would appreciate ANY hints to start me off. I, seriously, have NO IDEA what to do.

    thank you so much :)
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Apr 23, 2007 #2

    hage567

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    Homework Helper

    How many moles of potassium nitrate do you have?
    How does the molarity change when the volume changes after the water is added (i.e. what is the new volume)?
     
  4. Apr 23, 2007 #3

    Curious3141

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    Homework Helper

    You need to know the prior volume of pot nitr. solution in the beaker.
     
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