Question

evaluating differences based on specific heat
material | specific heat (joules/gram °c)
gold | 0.129
iron | 0.450
which statement best describes the mass of gold and iron atoms based on their respective specific heat values?
gold atoms are heavier than iron atoms.
iron atoms are heavier than gold atoms.
gold atoms have the same mass as iron atoms.

Explanation:

Specific heat is related to atomic mass: lower specific heat generally means heavier atoms (since heavier atoms have fewer atoms per gram, so less heat needed to raise temperature). Gold has lower specific heat (0.129) than iron (0.450), so gold atoms are heavier.

Answer:

Gold atoms are heavier than iron atoms.