A block of copper has a mass of 143.584 g and measures 5.05 cm by 2.55 cm by 1.25 cm.What is the density of the rectangular copper block?

Question

Quizplus · Accepted Answer

Density = mass/volume.
The volume of the rectangular copper block is calculated by multiplying its length, width, and height:

Volume = (5.05 cm) x (2.55 cm) x (1.25 cm) = 16.2109375 cm^3

Density = (143.584 g) / (16.2109375 cm^3) = 8.865 g/cm^3 (rounded to three significant figures)

The closest option to this answer is B) 8.92 g/cm^3. Therefore, the best choice is B.

A Block of Copper Has a Mass of 143