# A 5.03 gram cube of an unknown metal has an edge length of 1.23 cm. What is the unknown metal?

Jun 23, 2016

rho("density")="Mass"/"Volume" $=$ $\frac{5.03 \cdot g}{1.23 \cdot c m} ^ 3$

$=$ $2.70 \cdot g \cdot c {m}^{-} 3$

#### Explanation:

So we need to find a metal with $\rho = 2.70 \cdot g \cdot c {m}^{-} 3$. Obviously, we don't know these off the tops of our heads.

We look for an elemental metal only, because clearly, we could probably find a few alloys with the required density.

The metal is quite probably aluminum.