A Sample of Natural Rubber (200

question 33

Multiple Choice

A sample of natural rubber (200.0 g) is vulcanized, with the complete consumption of 4.8 g of sulfur. Natural rubber is a polymer of isoprene (C₅H₈) . Four sulfur atoms are used in each crosslink connection. What percent of the isoprene units will be crosslinked?

• A)7.6
• B)5.1
• C)2.5
• D)9.4
• E)1.3

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Definitions:

PLISSIT Model

A conceptual model used in sex therapy and counseling that outlines a tiered strategy for intervention; it stands for Permission, Limited Information, Specific Suggestions, and Intensive Therapy.

Intervention

An act of becoming intentionally involved in a difficult situation, in order to improve it or prevent it from escalating.

Sexual Concerns

Issues related to sexual function, behavior, preferences, or health that might be a source of distress or difficulty for individuals or couples.

Vaginismus

A condition involving a muscle spasm in the pelvic floor muscles, which can make vaginal penetration for intercourse, tampon insertion, or gynecological examinations painful or impossible.