The Nuclide As-76 Has a Half-Life of 26

question 61

Multiple Choice

The nuclide As-76 has a half-life of 26.0 hours.If a sample of As-76 weighs 344 g,what mass of As-76 remains after 538 minutes?

• A) 67.8 g
• B) 271 g
• C) 144 g
• D) 437 g
• E) 251 g

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Definitions:

Law of Effect

A psychological principle suggesting that behaviors followed by satisfactory outcomes are more likely to be repeated, whereas those followed by unsatisfactory outcomes are less likely to be repeated.

Satisfying Outcomes

Outcomes that fulfill or exceed the expectations of an individual, leading to contentment or happiness.

Behaviors

The observable actions, reactions, or conduct of an individual or group in response to external or internal stimuli.

Frustrating Outcomes

Results of actions that cause annoyance or disappointment due to failure to satisfy needs or expectations.