This problem is providing the densities of iron, gold and platinum and asks for the two correct answers which turned out to be "For equal volumes of all three substance, platinum will be the heaviest" and "For equal masses of all three substances, iron will occupy the most amount of space".
Density
In science, we define density as the degree of compactness of a substance and the mathematical formula can be written as:
[tex]\rho = m/V[/tex]
Thus, we can see that the greater the mass the greater the density and the greater the volume the lesser the density, which are directly and inversely proportional relationships, respectively.
In such a way, if we have equal masses, say 1 g, one can see that the most of the volume will be occupied by the element with the lowest density, in this case iron, for that reason, the first correct statement is "For equal masses of all three substances, iron will occupy the most amount of space".
On the other hand, if we have equal volumes, say 1 cm³, one concludes that the heaviest element is the one of the greatest density, in this case platinum, so that the second correct statement is "For equal volumes of all three substance, platinum will be the heaviest".
Learn more about density: brainly.com/question/952755
