Question

consider the following metals and their densities:

element	density (g/ml)
copper	8.93
gold	19.3
chromium	7.15
platinum	21.46

if there are samples of iron, copper, gold, chromium, and platinum, where each sample has the same volume, which of the metals will have the greatest mass? select the single best answer.
o iron
o copper
o gold
o chromium
o platinum

Explanation:

Step1: Recall density - mass - volume formula

The formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume. Rearranging for mass gives $m =
ho V$.

Step2: Analyze given volumes

Since the volume $V$ of each sample is the same, the mass $m$ is directly proportional to the density $
ho$.

Step3: Compare densities

We have the densities: iron ($7.87\frac{g}{mL}$), copper ($8.93\frac{g}{mL}$), gold ($19.3\frac{g}{mL}$), chromium ($7.15\frac{g}{mL}$), platinum ($21.46\frac{g}{mL}$). Platinum has the highest density among them.

Answer:

platinum