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einsteindude einsteindude
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Sodium-24 has a half-life of 15 hours. How many hours is three half-lives?
A) 5.0 hours
B) 45 hours
C) 30 hours
D) 15 hours
E) 7.5 hours
Textbook 
Conceptual Physical Science

Conceptual Physical Science


Edition: 6th
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f_zah1f_zah1
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