The density of the two pieces of rock is determined from the ratio of their masses to the pore volume of the rock.
The density of an object is the ratio of mass to volume of the object.
Density = mass/volume
Assuming a constant pore volume of the rock = V
Density for 26.3 g = 26.3/V
Density for 58.3 g = 58.3g/V
Thus, the density of the two pieces of rock is determined from the ratio of their masses to the pore volume of the rock.
Learn more about density here: https://brainly.com/question/6838128
#SPJ1