Problem: The following diagram represents solid carbon dioxide, also known as dry ice. Which of the following diagrams best represents the dry ice after it has sublimed into a gas?

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Recall:

  • Sublimation is a physical change → SOLID TO GAS
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Problem Details

The following diagram represents solid carbon dioxide, also known as dry ice. A sample of solid carbon dioxide. Each molecule consists of a central black sphere (carbon atom) combined with two red spheres (oxygen atoms). The molecules are closely packed in a rigid, ordered structure.

Which of the following diagrams best represents the dry ice after it has sublimed into a gas? Three scenes, a, b, and c. Scene a depicts three black spheres and three molecules of two red spheres combined with the molecules spaced relatively far apart. Scene b depicts three molecules of two red spheres combined and three molecules of a black and red sphere combined with the molecules spaced relatively far apart. Scene c depicts four molecules consisting of a black sphere combined with two red spheres with the molecules spaced relatively far apart.

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