given the following list of densities, which material would float in a molten vat of lead provided that they do not themselves melt? densities (g/ml) : lead=11.4, glass = 2.6, gold = 19.3, charcoal = 0.57, platinum = 21.4

Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves melt?

Densities (g/mL) : lead = 11.4, glass = 2.6, gold = 19.3, charcoal = 0.57, platinum = 21.4.

glass and charcoal

Explanation:

The density of molten lead is about 10.65Kg/m^3

By Archimedes principles, the buoyancy of an object in a fluid is proportional to the mass of fluid displaced

which in turn is proportional to the object's density

Generally an object well float when placed on a denser medium

glass = 2.6, and charcoal = 0.57 are both less dense so they will float on Lead