Question

a 100 cm3 block has a mass of 395 g. find its relative density. (density of water =1g/cm3)

Answer 1

relative density=density of object/ density of water
100 cm^3/395 g

= 100×1/395
0.25 (approx)
relative density =0.25





hope that cleared

Answer 2

According to given data, Relative density = 3.95

Relative density of a substance is calculated as the ratio of density of known substance to density of water.

In the given question -

Density of water - 1g/cm³

Mass of block - 395g

Volume of block - 100cm³

Density of block - mass per unit volume.

Density - 395/100

Density of block - 3.95 g/cm³

Relative density - 3.95/1

Hence , Relative density of block with respect to water will be - 3.95