Propylene Glycol, C₃H₆(OH)₂, Is Sometimes Used in Automobile Antifreeze Solutions

question 44

Multiple Choice

Propylene glycol, C₃H₆(OH) ₂, is sometimes used in automobile antifreeze solutions. If an aqueous solution has a mole fraction of c _{C3H6(OH) 2} = 0.100, what is the molality of the propylene glycol in this solution?

• A) 5.55×10 ^{- 3} m
• B) 4.20 m
• C) 5.55 m
• D) 6.17 m
• E) 118 m

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Definitions:

Hearing Abilities

The capacity of organisms to detect sound waves through specific anatomical structures, allowing for communication and environmental awareness.

Sound Frequencies

The number of sound vibrations per second, measured in Hertz (Hz), determining the pitch of sounds heard.

Crickets

Insects of the family Gryllidae, known for their chirping sounds produced by rubbing their wings together, often used as indicators of temperature.

Intensity Threshold

The minimum level of stimulus required to elicit a perceptible response or reaction in a biological system.