Asked Sep 21, 2019

3. Why is the density of a gas much lower than that of a liquid or solid under atmospheric conditions? What units are normally used to express the density of gases?


Expert Answer

Step 1

Density of a substance is defined as its mass per unit volume.


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Mass DensityVolume

Step 2
This means that:
• If the mass increases, density increases
• If the volume increases, density decreases


Step 3

Solids and liquids have strong intermolecular force of attraction, so molecules are closely held together. Gases have the negligible intermolecular force of attraction, so their molecules are far away from ...

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