The Following Reactions Occur at 500 K

question 36

Multiple Choice

The following reactions occur at 500 K. Arrange them in order of increasing tendency to proceed to completion (least completion → greatest completion) .

• A) 2 < 1 < 3 < 4
• B) 3 < 1 < 4 < 2
• C) 3 < 4 < 1 < 2
• D) 4 < 3 < 2 < 1
• E) 4 < 3 < 1 < 2

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Definitions:

Tracheids

Component of xylem. Tapered cells that die when mature; pitted walls that remain interconnect with other tracheids to form water-conducting tubes.

Vessel Elements

Of xylem, cells that form in stacks and die when mature; their pitted walls remain to form water-conducting tubes. Each tube consists of a stack of vessel elements that meet end to end at perforation plates.

Stomata

Small openings on the surface of leaves and stems that allow for gas exchange.

Humidity

A measure of the amount of water vapor in the air, affecting weather, climate, and comfort levels.