At the Beginning of Emerging Adulthood,age 18,about ____ of Americans

question 179

Multiple Choice

At the beginning of emerging adulthood,age 18,about ____ of Americans have had intercourse at least once,and by age 25 nearly ____ emerging adults have had intercourse at least once.

• A) 1/4; 1/2
• B) 1/2; all
• C) 3/4; all
• D) 90%; all

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Definitions:

IR

Short for Infrared Spectroscopy, a technique used to identify and study chemicals by analyzing the infrared light absorbed by molecules.

Carbonyl

A functional group characterized by a carbon atom double-bonded to an oxygen atom (C=O), central to many organic reactions and compounds.

Infrared Radiation

A form of electromagnetic radiation with longer wavelengths than visible light, used in heating and imaging technologies.

Alkene Absorption

Refers to the specific wavelengths at which alkenes absorb infrared light due to the stretching vibrations of the carbon-carbon double bond.