Question

23. A 54-gram sample of an unknown material has a volume equal to 20 cm'. Based on its density,

could the sample be aluminum? Explain.

Answer 1

The given sample is aluminum.

Step-by-step explanation:

Given data:

Mass of unknown sample = 54 g

Volume of given sample = 20cm³

Is sample is Al = ?

Solution:

In order to solve this problem we must know the density of Al from literature.

density of Al = 2.7 g/cm³

Now we will calculate the density of given unknown sample.

d = m/v

d = 54 g/ 20cm³

d = 2.7 g/cm³

Thus given sample is aluminum.