If we are given the mass, the volume that the certain substance occupies is calculated by using the density in the equation,
V = m/D
where V is the volume, mi s the mass, and D is density. From the reliable sources, the value of the density of the substance is equal to 2,700 kg/m³.
Substituting the known values from to the equation,
V - (6.56 kg)/(2700 kg/m³)
V = 2.429 x 10^-3 m³
Answer: 2.429 x 10^-3 m³