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:

Magnetic Fluids

Liquids that are magnetized or capable of being magnetized, commonly referred to as ferrofluids, used in various technological and medical applications.

Animal Magnetism

An outdated term that referred to a naturalistic healing power or force, postulated by Franz Mesmer, thought to reside within certain individuals.

Sakel

A reference to Manfred Sakel, a psychiatrist known for introducing insulin coma therapy for psychiatric purposes in the 1930s.

Insulin

A hormone produced by the pancreas that regulates glucose levels in the blood, crucial for managing diabetes.