The Half-Life of As-81 Is 33 Seconds

question 158

Multiple Choice

The half-life of As-81 is 33 seconds. If only 12.5 g of a 100.0 g sample of As-81 is left, how long did it take for the original sample to decay to its current mass?

• A)99 s
• B)16.5 s
• C)66 s
• D)33 s

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Definitions:

Behavioral Problems

Refers to actions and attitudes that are socially unacceptable, disruptive, or harmful to oneself or others.

High Extraversion

A personality trait that encapsulates qualities such as sociability, enthusiasm, and assertiveness, leading individuals to seek out social stimulation and enjoy being around others.

Personality Disorders

A group of mental disorders characterized by enduring maladaptive patterns of behavior, cognition, and inner experience, exhibited across many contexts and deviating from those accepted by the individual's culture.

Odd or Eccentric

Descriptive terms for behaviors or personalities that significantly deviate from societal norms or expectations.