A Student Has Equal-Volume Samples of Three Gases

question 39

Multiple Choice

A student has equal-volume samples of three gases. All the gases are at the same temperature and pressure. If the three gases are O₂, CO₂, NH₃, which sample contains the largest number of molecules?

• A) O₂
• B) CO₂
• C) NH₃
• D) None, they all contain the same number of molecules.

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Definitions:

Transverse Abdominis

The deepest layer of the abdominal muscles that helps stabilize the core, pelvis, and lower back, and is key in maintaining internal abdominal pressure.

External Oblique

A muscle in the abdomen's outer layer that helps in rotating the trunk and pulling the chest downward.

Rectus Abdominis

A major muscle in the front of the abdomen that assists in breathing, movement, and posture.

Sternomastoid

Refers to the sternocleidomastoid muscle, which runs from the sternum and clavicle to the mastoid process of the skull, turning the head.