What Is the Approximate Value of the Length of the C=C

question 79

Multiple Choice

What is the approximate value of the length of the C=C bond in ethane, CH₂=CH₂?

• A) 121 pm
• B) 134 pm
• C) 142 pm
• D) 154 pm

Identify the relationship between sleep and physical health conditions.

Recognize the impact of lifestyle and environmental factors on sleep.

Describe strategies to promote healthy sleep habits and routines.

Identify the effects of sleep deprivation and disorders on daily functioning.

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Definitions:

Polyurethane

A polymer composed of organic units joined by carbamate (urethane) links, used in foams, elastomers, and coatings.

Monomer Units

Small molecules that can be bonded together to form polymers.

Cationic Polymerization

A type of polymerization where a cationic initiator transfers charge to a monomer causing it to become reactive and link to other monomers.

Poly(acrylonitrile)

A synthetic polymer made by polymerizing acrylonitrile, used in the production of fibers, plastics, and rubbers due to its strength and thermal stability.