How Much Energy Is Required to Vaporize 98

question 20

Multiple Choice

How much energy is required to vaporize 98.6 g of ethanol (C₂H₅OH) at its boiling point if its Δ_vapH is 40.5 kJ mol^-1?

• A) 86.7 kJ
• B) 11.5 kJ
• C) 18.9 kJ
• D) 52.8 kJ
• E) 39.9 kJ

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Definitions:

Masters And Johnson

Researchers who conducted pioneering studies on human sexuality and sexual response during the 1950s and 1960s.

Laboratory Investigations

Controlled experiments conducted in a lab setting to study psychological phenomena under controlled conditions.

Hormones

Chemical messengers produced by the endocrine glands that regulate various bodily functions and processes.

Testes

The male reproductive organs that produce sperm and hormones, including testosterone.