what is mathematical formula for relative density . It is also defined as the ratio of the mass of substance to the mass of equal volume of water at 4 o C. P mV Volume is to do with filling space.
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Relative density is defined as the ratio between density and density of the reference object. Course Title CHEMISTRY 132. So if you want to be fancy the formula looks like this.
The formula for Relative Density RD is.
The relative density is measured as follows. R m v. Therefore there is no unit for relative density. Given Density of water p 1000 kgm-3 From Archimedes principle formula F b r g V.
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In most cases water is used as the standard material and in this case relative density is also called as specific gravity.
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Theoretical Density actual density fresh unit weight theoretical x 100 calculated air content Since the theoretical density from the lab has no air you are comparing that laboratory weight to the fresh weight which contains air.
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The relative density of a substance is defined as the ratio of the density of that substance to the density of water at 4 o C.
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RD r substance r reference If a difference reference is not identified it may be assumed to be water at 4 C.
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It is also defined as the ratio of the mass of substance to the mass of equal volume of water at 4 o C.