Question

Relative densities of two substances A and B are 2.5 & 0.9 respectively. Find densities of A and B Also find whether they sink or float in water. ( Density of water = 1000 kg per cubic meter.

Answer 1

Answer:

Relative Density of a substance = density of substance /density of water

Relative density of A = Density of A/density of water

Therefore;  2.5 = density of A /1000 kg/m³

Density of A = 2.5 × 10³ kg/m³

Relative density of B = Density of B/density of water

                             0.9 = Density of B / 1000 kg/m³

Density of B = 0.9 × 1000 kg/m³

                     = 900 kg/m³

Therefore; substance A will sink in water as it is denser than water, ehile substance B will float as it is less denser than water.

Explanation:

HOPE IT WILL HELP YOU