Answer
The density of copper with the values given in the question is 300 g/cm3. This is NOT the correct density for copper, which is 8.96 g/cm3 near room temperature.
Explanation:Density is the mass per unit of where D is density, M is mass, and V isvolume. The density equation is $$D = \dfrac{M}{V} $$
density, M is mass, and V is volume.
The mass of copper is 400 g. The volume is 1.5 mL, which is equal to 1.5 cm3. This is because 1 mL=1 cm3. Since copper is a solid, we'll use the cubic centimeter unit (cm3).
Plug the values into the equation.$$D = \dfrac{400 g }{1.5 cm^3} = 300 g / cm^3 $$ rounded to one significant figure.
NOTE!: The actual density of copper is $$ 8.96 g / cm^3 $$