Mass of a sample = M = 2.03 x 10-3 g
Density of a sample = D = 9.133 x 10-1 g/cm3
Volume of the sample = ?
By using the formula = D = M / V
V = M / D
Putting the values of density and mass of the sample
V = 0.00203/0.9133 = 0.0022cm3
V = 0.0022 cm3