Question

A 2.50 gram rectangular object has measurements of 22.0 mm, 13.5 mm, and 12.5 mm. What is the object’s density in units of g/mL? Use significant figures. Do not enter “g/mL” as part of your answer. Do not use scientific notation.

Answer 1

Density is equal to the ratio of mass to the volume.

Mathematical expression is given by:

`Density = (mass)/(volume)` (1)

Mass of the rectangular object = 2.50 g

Volume =
`22.0 mm* 13.5 mm* 12.5 mm`

= 3712.5
`mm^(3)`

Now, convert
`mm^(3)` into mL

1
`mm^(3)` = 0.001 mL

Thus, volume = 3.7125 mL

Put the values in formula (1)

`Density = (2.50 g)/(3.7125 mL)`

= 0.6734 g/mL

In three significant figures, density is equal to 0.673 g/mL

Hence, density is equal to 0.673 g/mL