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

1 Answer
anor277
Jun 23, 2016

#rho("density")="Mass"/"Volume"# #=# #(5.03*g)/(1.23*cm)^3#

#=# #2.70*g*cm^-3#

Explanation:

So we need to find a metal with #rho=2.70*g*cm^-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.

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