Density is a physical property which describes the mass of a substance per unit of volume of the substance. It is expressed as Density = m / V and it has units like g/cm^3. We use the density given to solve the problem.Density = m / V0.824 g/mL = 0.451 g / VV = 0.451 g / 0.824 g/mLV = 0.55 mL