If an Isotope Has a Half-Life of 50 Million Years,and

question 8

Multiple Choice

If an isotope has a half-life of 50 million years,and 1/8 of the sample remaining consists of that isotope,what is the age of the rock from which it was taken?

• A) 400 million years
• B) 300 million years
• C) 150 million years
• D) 800 million years
• E) none of these

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Definitions:

Non-Elective Contraindication

A situation where medical treatment must not be used due to the risk of harm and the treatment is not chosen by the patient or provider.

Noted Exceptional Condition

A unique or rare health state or disorder that is identified and specifically highlighted due to its uncommon nature.

NOS

An abbreviation for "Not Otherwise Specified," used in medical coding when a condition doesn't fit other specific categories.

Not Otherwise Specified

A classification used in diagnosis when symptoms don't fully meet the criteria for a more specific disorder.