Answer to Question #138372 in General Chemistry for Edriane

Question

The density of copper is 8.94 g/cm3 at 20°C and 8.91 g/cm3 at 60°C. This density decrease is the result of which of the following

Answer 1

The density decrease is as a result of increase in volume while the mass of copper remains constant.

Since density is the ratio between mass and volume, increase in volume will result in decrease in density; volume is the numerator, if the mass is constant.