A Container Is Filled with a Mixture of Helium (Light

question 50

Multiple Choice

A container is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. A thermometer in the container reads 22°C. Which gas molecules have the greater average speed?

• A) It is the same for both of the gases because the temperatures are the same.
• B) The oxygen molecules do because they are diatomic.
• C) The oxygen molecules do because they are more massive.
• D) The helium molecules do because they are less massive.
• E) The helium molecules do because they are monatomic.

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Definitions:

Mesoderm

The middle layer of an embryo in early development, which gives rise to muscles, bones, and blood vessels.

Inner Cell Mass

A group of cells inside the primordial embryo that will eventually give rise to the definitive structures of the fetus.

Muscles

Tissues in the body that have the ability to contract, making movement possible, and are essential for bodily functions and posture.

Bones

The rigid organs that form part of the vertebrate skeleton, supporting and protecting various parts of the body and producing red and white blood cells.