If the Half-Life of a Radioactive Isotope Is 32 Days,how

question 72

Multiple Choice

If the half-life of a radioactive isotope is 32 days,how many half-lives must pass before a sample is less than ?

• A)2
• B)5
• C)7
• D)9
• E)More information is needed.

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Definitions:

Hypotheses

Proposed explanations or predictions that can be tested through research and experimentation.

Theories

Systematically organized principles or explanations about phenomena or relationships in the universe.

Experiments

Scientific procedures undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.

Correlations

Statistical measures that indicate the extent to which two or more variables fluctuate together.