Ethyl Chloride, C₂H₅Cl, Is Used as a Local Anesthetic

question 60

Multiple Choice

Ethyl chloride, C₂H₅Cl, is used as a local anesthetic. It works by cooling tissue as it vaporizes; its heat of vaporization is 26.4 kJ mol^-1. How much heat could be removed by 20.0 g of ethyl chloride?

• A) 8.18 kJ
• B) 341 kJ
• C) 528 kJ
• D) 3410 kJ

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Definitions:

Cloned

Cloned refers to the process or product of creating a genetically identical copy of an organism or its cells.

Tumor Suppressor Gene

A gene that protects a cell from one step on the path to cancer. When this gene is mutated to cause a loss or reduction in its function, the cell can progress to cancer.

Growth Factor Gene

A gene that codes for a growth factor, which is a naturally occurring substance capable of stimulating cellular growth, proliferation, and cellular differentiation.

Oncogenes

Genes that have the potential to cause cancer by transforming a normal cell into a tumor cell when mutated or expressed at high levels.