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Hey my problem is,

  1. Aug 4, 2011 #1
    1. The problem statement, all variables and given/known data
    The Half life of the isotope 24Na is 15.00 hours. a stock solution of 24NaI contained 16000Bq of activity in 25cm3 at 5.00 pm on the 2nd of june. An experiment starting at 8:30am on the 4th of june requires 1kBq. What volume of the stock 24NaI solution would be required to give the desired activity at 8:30 am on the 4th of june


    2. Relevant equations

    I am not given any equation but the ones that relate to it are the simple half life, decay constant and exponential decay equations

    3. The attempt at a solution
    I really have no idea where to start in this problem i know this is asking alot but any indication or support would be greatly appriciated
     
    Last edited: Aug 4, 2011
  2. jcsd
  3. Aug 4, 2011 #2

    tiny-tim

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    welcome to pf!

    hi roley! welcome to pf! :wink:
    ok, write out these equations, and we'll take it from there :smile:
     
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