Question

The volume of 50g of a substance is $20c{m}^3$. If the density of water is $1g/c{m}^3$, what will be the mass of water displaced by the substance?

Answer 1

Given:
mass = 50g
volume = 20cm³
density = mass/volume = 50/20 = 2.5 g/cm³
density of water = 1 g/cm³

Since the density of the substance is greater than the density of water, it will sink in water.

The volume of water displaced = 20 cm³
mass of water displaced = volume×density = 20×1 = 20g