Krypton-85 Has a Half-Life of 10 Years

question 144

Multiple Choice

Krypton-85 has a half-life of 10 years. Identify the percentage of Kr-85 produced from the Chernobyl accident in 1986 that still remains radioactive in 2010.

• A) 25 %
• B) 12 %
• C) 6 %
• D) 3 %

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Definitions:

Leptin

A hormone produced by adipose (fat) cells that helps to regulate energy balance by inhibiting hunger, which in turn diminishes fat storage in adipocytes.

Social Acceptance

The approval and positive reception by individuals or groups towards others, often based on conforming to social norms or expectations.

Drug Tolerance

The body's reduced response to a drug over a period of time, necessitating an increase in dosage to achieve the same effect.

Mental Alertness

Describes the state of being keenly aware, attentive, and ready to respond quickly to stimulations or changes in the environment.