A Certain Radioactive Element Has a Half-Life of One Hour

question 74

Multiple Choice

A certain radioactive element has a half-life of one hour.If you start with a 1-g sample of the element at noon,how much of this same element will be left at 3:00 PM?

• A)0.5 gram
• B)0.25 gram
• C)0.125 gram
• D)0.0625 gram

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Definitions:

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The internal drive or initiative that leads an individual to act or pursue goals without external influence or reward.

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Decreased responsiveness to a stimulus after repeated presentations of the stimulus.

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