Question

relative density of silver is 10.8 . the density of water is 10q kg metre ^-3 . what is the density of silver in SI unit ? ​

Answer 1

The relative density of silver is 10.8, and the density of water is 10³ kg/m³. What is the density of silver in an SI unit?

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Hari om,you are asking a question as to : “ The relative density of silver is 10.8, and the density of water is 10^3 kg/m^3. What is the density of silver in an SI unit?”. Hari om.

Relative density ( RD ) = density of substance / density of water.

RD of Silver = 10.8 & density of water = 10^3kg/m^3.

Substituting the values in the formula :

10.8 = density of Silver /10^3 kg/m^3.

Transposing the terms,

Density of Silver = 10.8 × 10^3 kg/m^3, =10800 kg/m^3. ( The required answer )

THEORY BEHIND THE CALCULATION :

[{The mass of a unit volume of a substance is called its density.

If D is the density of a body of mass M and volume V, then

In S.I units density is expressed in kg m -3.

For example, density of water is 1000 kg m-3.

Density of iron is 8500 kg m-3.

Most of the substances expand on heating and contract on cooling, but the mass remaining constant for all cases. The density of most of the substances decreases with the increase in temperature and increases with decrease in temperature. But water contracts when cooled up to 40C but expands when cooled further below 40C . Thus the density of water is maximum at 40C.

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.}]

Answer 2

Question

relative density of silver is 10.8 the density of water is 10^3 kg m^-3 . what is the density of silver in SI unit ?

Answer

relative density of silver = 10.8

relative density = density of silver / density of water

density of silver = relative density of silver X density of water

=> 10.8×10^3kg m^-3

so the required answer is 10.8 x 10^-3 kg m^-3