Strontium- 90 Is a Byproduct in Nuclear Reactors Fueled by the Radioisotope

question 121

Multiple Choice

Strontium- 90 is a byproduct in nuclear reactors fueled by the radioisotope uranium- 235. The half- life of strontium- 90 is 28.8 yr. What percentage of a strontium- 90 sample remains after 75.0 yr?

• A) 16.5
• B) 68.1
• C) 38.4
• D) 2.60
• E) 7.40

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Definitions:

Narcissism

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Expressions that undervalue oneself, often reflecting poor self-esteem or self-deprecating thoughts.

Chemistry Exam

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