Sodium-24 Has a Half-Life of 15 Hours

question 46

Multiple Choice

Sodium-24 has a half-life of 15 hours. How many hours is three half-lives?

• A)60 hours
• B)45 hours
• C)30 hours
• D)15 hours
• E)7.5 hours

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Definitions:

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The number of heartbeats per minute, an indicator of cardiovascular health and physical condition.