Looking at the density of the penny which is 7.1347 g/cm³, it can be concluded that it is not made from copper.
What is density?
It is the ratio of the mass of a substance to its volume.
Mathematically; density = mass/volume
In this case, the mass of the coin is 2.49 g, and the volume is 0.349 cm³. Thus:
Density of coin = 2.49/0.349 = 7.1347 g/cm³
The density of copper is 8.96 g/cm³ at room temperature.
Hence, the penny is not made of copper.
More on density can be found here: https://brainly.com/question/15164682
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