The Half-Life of Strontium-90 Is 28

question 25

Multiple Choice

The half-life of strontium-90 is 28.1 years .Calculate the percent of a strontium sample left after 100 years.

• A) 76%
• B) 0.34%
• C) 63%
• D) 82%
• E) 8.5%

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Definitions:

Bem's Sex Role Inventory

A psychological test that measures a person's masculinity and femininity based on societal expectations.

Androgyny

The combination of masculine and feminine characteristics into an ambiguous form.

Sandra Bem

A psychologist known for her work on gender roles, gender schema theory, and the Bem Sex-Role Inventory, a tool used to explore how individuals identify with traditionally masculine or feminine traits.

Androgynous

Exhibiting characteristics or qualities that are associated with both male and female genders; gender ambiguity.