How Long Would It Take 4

question 74

Multiple Choice

How long would it take 4.00 × 10²⁰ atoms to decay to 1.00 × 10¹⁹ atoms if their half-life was 14.7 years?

• A)29.4 years
• B)58.8 years
• C)78.2 years
• D)147 years

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Definitions:

Oligomenorrhea

A menstrual disorder characterized by infrequent menstrual periods.

Clomiphene Citrate

A fertility medication used to stimulate ovulation in women who have difficulty becoming pregnant due to problems with ovulation.

Aromatase Inhibitor

A class of drugs used primarily in the treatment of breast cancer by inhibiting the enzyme aromatase, thus lowering estrogen levels in the body.

Human Chorionic Gonadotropin

A hormone produced during pregnancy by the placenta, often measured in pregnancy tests.