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October 20, 2014

Homework Help: chemistry help!

Posted by Skylar on Thursday, October 20, 2011 at 12:26am.

Potassium has an atomic mass of 39.10amu. a sample of potassium is made up of isotopes potassium-39 (mass=38.964) and potassium-41(mass =40.962 amu). What percentage of the potassium sample is potassium-39? what percent of the sample is potassium-41?

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