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The Isotope Has a Half-Life of 21 Hours

Question 50

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The isotope The isotope has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of , approximately how many of these atoms will remain after one week? A) 1250 B) 78 C) 39 D) 0 E) none of the above has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of The isotope has a half-life of 21 hours. If a sample initially contains exactly 10000 atoms of , approximately how many of these atoms will remain after one week? A) 1250 B) 78 C) 39 D) 0 E) none of the above , approximately how many of these atoms will remain after one week?


A) 1250
B) 78
C) 39
D) 0
E) none of the above

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