the specific gravity of substance in the si unit is 2.7.show that is same in cgs unit as well
Answers
Explanation:
The relative density of aluminum is 2.7. What does this statement mean?
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ANSWER :
Browse through the following links for further details regarding the answers to your questions on the definition of the Relative Density of a given material :
From the above link, it can be seen as follows :
Relative density of a substance is defined as the ratio between the density of the substance to the density of water at 40C. Relative density is also known as specific gravity.
The relative density of a substance is a pure number without any unit.
It tells how many times a substance is heavier than water.
Relative density (R.D) of a substance can be calculated by dividing density of a substance with the density of water.
For example,
Thus, Relative density of iron is 8.5 (No unit is applied).
Density of a substance can be calculated by multiplying Relative Density (R.D.) of the substance with the Density of water.
Therefore,
Given that the Relative Density of Aluminium =2.7 (No units ) .
Density of Al = R. D of Al × Density of water;
Density of Al =2.7 × Density of water.
Density of Al= 2.7 × 1000 kg /m3, in SI units or , Density of Al = 2700 kg/m3 in SI units.
Or, Density of Al = 2.7 × 1.0 gms /cm 3, in cgs units. Or, Density of Al =2.7 gms /cm3 ,in cgs units.