Question

The relative density of copper is 8.9 .express its density in g/cm3 and kg/m3

Answer 1

Relative density is the density of a substance with respect to pure water at 4°C.

The density is water at 4° C is 1 g/cm^3.

As the relative density of copper is 8.9, it means that it's density is

8.9 g/cm^3

It can be converted to kg/m^3

1 g/cm^3 =
0.001 kg/ (0.000001 m^3)

So, 1 g/cm^3 = 1000 kg/m^3

Thus, density is copper is
8.9 × 1000 = 8900 kg/m^3.


Thus, density of copper is
8.9 g/cm^3 , or 8900 kg/m3

Answer 2

Answer:

a. CGS unit- g/cm^3

8.9 g/cm^3

b. SI unit- kg/cm^3

1 g/cm^3= 1000 kg/m^3

8.9×1000= 8.9×10^3 kg/m^3 OR 8900 kg/m^3