Suppose You Start with 1 Kilogram of a Radioactive Substance

question 45

Multiple Choice

Suppose you start with 1 kilogram of a radioactive substance that has a half-life of 10 years.Which of the following statements will be true after 20 years pass?

• A)You'll have 0.25 kilogram of the radioactive substance remaining.
• B)All the material will have completely decayed.
• C)You'll have 0.75 kilogram of the radioactive substance remaining.
• D)You'll have 0.5 kilogram of the radioactive substance remaining.

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Definitions:

Neurogenesis

The process by which new neurons are formed in the brain, contributing to brain plasticity and repair.

Cognitive Adaptability

The ability to change one's thinking and behavior as necessary based on new information, contexts, or strategies.

Older Adults

Individuals who are in a later stage of life, often considered to be ages 65 and above.

Right Hemisphere

The half of the brain that controls the left side of the body and is often associated with creativity and spatial abilities.