If you have two substances, one with a density of 2.0 g/cm3 and one with a density of 1.3 g/cm3 and you combined them, which one would float on top other and why?

Explanation:

Assuming the substances are fluids that do not mix, the lighter substance (ρ = 1.3 g/cm³) will float on top of the heavier substance (ρ = 2.0 g/cm³).  This is due to Archimedes' Principle, which explains buoyancy.

the answer would be a

d. platinum would have the greatest temperature increase because it has the lowest specific heat.