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    Principles of Chemistry
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    Exam 19: Radioactivity and Nuclear Chemistry
  5. Question
    A Sample Initially Contains 3
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A Sample Initially Contains 3

Question 81

Question 81

Multiple Choice

A sample initially contains 3.2 moles of a radioactive isotope.How much of the sample remains after four half-lives?


A) 0.20 mol
B) 1.6 mol
C) 0.80 mol
D) 0.40 mol

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