Question

explain the meaning of the statement relative density of Aluminium is 2.7

Answer 1

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the meaning of this statement "relative density of aluminum is 2.7" is that the density of aluminum is 2.7 with respect to something or taking something as reference.....

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Answer 2

The answer to the question is that the density of Aluminium is 2.7 with respect to any reference substance like liquid, solid or gas.

EXPLANATION:

The relative density of a substance 'A' with respect to any other substance 'B' is defined as the ratio of density of the substance A to the density of other substance B.

Mathematically it can be written as -

                    Relative density = $\frac{density\ of\ the\ substance\ A}{density\ of\ reference\ substance\ B}$

The reference substance may be a liquid. Normally we take water at 4 degree celsius as the reference substance.

The reference substance can be taken as solid and liquid.

Here, we have been given Aluminium. The relative density is given as 2.7.

As the reference substance is not given, so it may be any solid, liquid or gas.

Hence, the value 2.7 will signify the density of Aluminium with respect to any reference substance.