Copper has a density of 8.9 g/cm3. a copper necklace has a volume of 396 g/cm3 what is the mass of the copper necklace?

1. To solve this problem you must apply the formula for calculate the density, which is shown below:

 d=m/V

 d is the density (d=8.9 g/cm³).
 m is the mass
 V is the volume (V=396 cm3).

 2. When you clear the mass "m" and substitute the values into the formula, you obtain:

 d=m/V
 m=dxV
 m=(8.9 g/cm³)(396 cm3)
 m=3,524.4 g

 The answer is: The mass of the copper necklace is 3,524.4 g.