If a Radioactive Isotope That Was Injected into Your Bloodstream $\frac{1}{16}$

question 125

Multiple Choice

If a radioactive isotope that was injected into your bloodstream has a half life of 5 hours, how many hours do you have to wait before the amount of this isotope in your body is $\frac{1}{16}$ its original amount?

• A) 20
• B) 25
• C) 5
• D) 10
• E) 15

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Definitions:

American Psychiatric Association

A professional organization of psychiatrists aimed at advancing the understanding and treatment of mental disorders.

Autism Spectrum Disorder

A developmental disorder characterized by difficulties in social interaction and communication, along with restricted or repetitive patterns of thought and behavior.

American Psychiatric Association

A professional organization of psychiatrists dedicated to ensuring humane care and effective treatment for all persons with mental illness, including substance use disorders.

Complex Development Disorder

A category of mental health and developmental conditions that impair personal, social, academic, or occupational functioning, characterized by multifaceted developmental challenges.