Which of the Following Statements Concerning the Stereochemistry of Polymerization

question 9

Multiple Choice

Which of the following statements concerning the stereochemistry of polymerization is (are) correct?

• A)Polymers in the atactic configuration are more likely to be crystalline solids because regular packing of the polymer chains is easier.
• B)Polymers in the isotactic configuration tend to be softer and more flexible than atactic polymers.
• C)In general, radical polymerization leads primarily to branched polymers in the syndiotactic configuration.
• D)The percentage of chains in the isotactic or syndiotactic configuration decreases as the polymerization temperature decreases.
• E)none of the above

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Definitions:

Blood Pressure

The force that circulating blood exerts against the walls of the arteries during and between heartbeats.

Isometric Exercises

Physical exercises involving the contraction of muscles without significant movement of the joint, aimed at strength training without changing the length of the muscle.

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The capability of one or more muscles to generate strength when opposing a force.

Range-Of-Motion Exercises

Physical activities designed to move a joint through the full extent of its potential movement to improve or maintain flexibility and reduce stiffness.