Relative Density and Density Difference
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Relative Density and Density Difference
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Answer:
(a) The Density of a substance is defined as mass of the substance per unit volume.
Density of substance =
volume of substance
mass of substance
SI unit of density is kg/m
3
.
The Relative density of a substance is the ratio of its density to that of water.
Relative density of substance =
Density of water
Density of substance
It has no units.
(b)
Relative density of substance =
Density of water
Density of substance
7.1=
1000kg/m
3
Density of substance
density of substance =7.1×10
3
kg/m
3