Question

One way to help identify a substance is to compare the density of the substance with the density of a known substance. Suppose a cube of a silver-colored metal with a volume of 64 cm3 has a mass of 672 g. The density of pure silver is known to be 10.5 g/cm3. Based on this information, could the metal be pure silver?
A. No. The density is greater than pure silver's.
B. No. The density is less than pure silver's.
C. Yes. The density equals that of pure silver.

Answer 1

Answer:

C. Yes. The density equals that of pure silver.

Explanation:

Yes the unknown metal is pure silver.  

Density is the ratio of the mass of the substance to its volume. Density is directly proportional to that if mass and inversely proportional to that of volume.  

Density = $\frac{mass }{ volume}$ = $\frac{672 g }{64 cm3}$ cm³

             = 10.5 g/cm³

Here the density of the unknown metal is the same as that of silver.  

Answer 2

C. Yes, the density equals that of pure silver (10.5)