Question

The density of paper is 1.20 g/cm3. what is the mass of the paper in a notebook that is 76 mm thick, 215.9 mm wide, and 279.4mm long? express your answer in significant digits.

Answer 1

Density is a value for mass, such as kg, divided by a value for volume, such as m3. Density is a physical property of a substance that represents the mass of that substance per unit volume. To determine the mass, we calculate the volume of the paper and multiply to the density. We do as follows:

Volume =  76 mm x 215.9 mm x 279.4 mm = 4584506.96 mm^3 or 4584.51 cm^3

Mass = 1.20 g/cm^3 ( 4584.51 cm^3 ) = 5501.41 g