The Half-Life of ³⁰P Is 2

question 48

Multiple Choice

The half-life of ³⁰P is 2.50 minutes. If a sample of ³⁰P has 1.60 × 10¹⁰ nuclei present initially, how many remain after 10.0 minutes?

• A) 0.800 × 10¹⁰
• B) 0.400 × 10¹⁰
• C) 0.200 × 10¹⁰
• D) 0.100 × 10¹⁰
• E) 0.050 × 10¹⁰

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Definitions:

Rate of Return

The positive or negative change in an investment's worth, calculated as a percentage of its original cost.

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A numerical measure of the linear correlation between two variables, ranging from -1 to 1.

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