Martina has a sample of an unknown substance. she measures the substance. its mass is 13.5 grams, and its volume is 5 cm3. which metal might her sample be made of?

Explanation:

It is given that,

Mass of the unknown substance, m = 13.5 gm

Volume of the substance,

We need to tell the unknown sample is made up of. It can be indicated using the density of the sample. It can be calculated as :

So, the density of the sample is . The unknown sample is aluminium. Hence, this is the required solution.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures