You Have an Unknown Radioactive Material

question 19

Multiple Choice

You have an unknown radioactive material.If you start out with a 405 mg sample,and after 120 minutes 53.1 mg remains,what is the half life?

• A) 33.5 minutes
• B) 24.5 minutes
• C) 57.5 minutes
• D) 40.9 minutes
• E) 60.2 minutes

---

Definitions:

Sexual Strategies Theory

Proposes that humans have evolved specific mating strategies that vary depending on environmental conditions, social context, and individual goals.

Offspring

Offspring are the children or young of a person, animal, or plant, considered in relation to their parent or progenitor.

Sexual Response Cycle

A four-stage pattern of physiological and psychological responses during sex; the four stages are experienced differently by males than by females.

Alfred Kinsey

Alfred Kinsey was a pioneering American biologist and sexologist who conducted groundbreaking research on human sexuality in the mid-20th century.