Question

If is the relative density of substance is 7.1 what will be it's density in S.I unit?

Answer 1

As per the question, the relative density of a substance is given as 7.1.

Let the relative density is denoted as $d_{r}$ = 7.1

We are asked to calculate the density of the substance in S.I unit.

The relative density of a substance is defined as the ratio of density of the substance to the density of water at 4 degree celsius.

Mathematically relative density $[d_{r}]\ = \frac{density\ of\ substance}{density\ of\ water\ at\ 4\ degree\ celsius}$

The density of water at 4 degree celsius = $1\ g/cm^3$

                                                                    = $\frac{10^{-3}kg} { [10^{-2}m]^3}$

                                                                    = $10^{3}kg/m^3$

Hence, the density of the substance = density of water×relative density

                                                             = $10^{3}\ kg/m^3\times 7.1$

                                                             = $7.1\times 10^{3}\ kg/m^3$

Hence, the density of the substance in S.I unit is $7.1\times 10^{3}\ kg/m^3$

Answer 2

The relative density of a substance is a given as 7.1 we are asked to calculate the density of the substance in the SI unit the relative density of a substance is defined as the ratio of density of the substance to the density of water at 4 degrees Celsius

hope this will help u

MARK AS BRINLIST