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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Think Think
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9 years ago
If the half-life of a radioactive isotope is 32 days, how many half-lives must pass before a   sample is less than  ?
A) 2
B) 5
C) 7
D) 9
E) More information is needed.

Textbook 
Introductory Chemistry Essentials

Introductory Chemistry Essentials


Edition: 5th
Author:
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mel!811mel!811
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