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The specific gravity of coal typically ranges from 1.1 to 1.5, depending on the type of coal and its composition. Specific gravity is a measure of density, comparing the weight of a substance to an equal volume of water.
The specific gravity of acetone is approximately 0.79 at 20°C.
The specific gravity of feldspar can vary depending on the type and composition of the feldspar mineral. On average, feldspar minerals have a specific gravity ranging from about 2.5 to 2.8.
The specific gravity of water is 1.0, so 1 gallon of water will have a specific gravity of 1.0 as well.
The specific gravity of gypsum is approximately 2.3 to 2.4.
The specific gravity of liquid argon is approximately 1.4.