Question

if all of these substances were placed together in the same container, which would end up on the bottom? aluminum: 2.7 g/cm³, benzene: 0.9 g/cm³, magnesium: 1.7 g/cm³, water: 1 g/cm³, iron: 7.8 g/cm³

Explanation:

Step1: Understand density and layering

Substances with higher density sink to the bottom when placed together.

Step2: Compare densities

Aluminum: \(2.7\ g/cm^3\), Benzene: \(0.9\ g/cm^3\), Magnesium: \(1.7\ g/cm^3\), Water: \(1\ g/cm^3\), Iron: \(7.8\ g/cm^3\).

Step3: Identify the highest density

Among the given substances (excluding water as it's not an option in the answer choices), iron has the highest density (\(7.8\ g/cm^3\)).

Answer:

Iron