A Gas Is Expanded from an Initial Volume of 20

question 12

Multiple Choice

A gas is expanded from an initial volume of 20.5 L at 0.92 atm at 23 °C to a final volume of 34.6 L. During the expansion the gas cools to 12 °C. What is the final pressure?

• A) 0.28 atm
• B) 0.52 atm
• C) 0.57 atm
• D) 1.9 atm

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Definitions:

Double-Blind Study

A research method in which both the subjects and the researchers are unaware of which group (test or control) the subjects belong to, to prevent bias.

Experimental

Pertaining to a methodical procedure carried out with the goal of verifying, falsifying, or establishing the validity of a hypothesis.

Control Groups

Groups in an experiment that do not receive the treatment being tested, enabling comparison to groups that do receive the treatment to assess its effect.

Investigator

An individual, often a scientist or researcher, who conducts detailed and systematic examination or inquiry into something through research and experimentation.