why is the density of gas measured in g dm-3 while that of a liquid in g cm-3
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Answer:
A decimeter cubed is 1000 times greater than a centimeter cubed.
Water has a density of about 1 gram per centimeter cubed. Gasoline is about 0.7 in these units. Common rocks have densities between 2 and 3 gram per centimeter cubed.
Air is getting on for a thousand times less dense than water so has a density about 1 gram per decimeter cubed depending on temperature and pressure. (The value is about 1.2 under common conditions.)
Thus some people use these units so that the numbers are convenient, instead of saying air is 0.0012 g/cm3. or that sandstone is 2650 g/dm3.
It is often the case that specific gravity is used. This is the ratio of the density of the substance to a reference substance, which is usually water for liquids and solids, and air for gases.
Thus water has a specific gravity of 1, gasoline 0.7, sandstone 2.65. This has the advantage that it is a ratio so does not matter what units you use, providing both are the same.
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Answer:
Explanation:bcz g/dm3 is has greater value in digit which is suitable for measure gas bcz gas has greater volume similarly liquid have low volume than gas and has smaller scale like g/cm-3
Like , 1cm =1000dm