Chemistry Practice Problems Density Practice Problems Solution: What is the density of lead (in g/cm3 ) if a recta...

# Solution: What is the density of lead (in g/cm3 ) if a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 219.1 g ?

###### Problem

What is the density of lead (in g/cm3 ) if a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length has a mass of 219.1 g ?

###### Solution

We are asked to determine the density of lead (in g/cm3 ) in a rectangular bar measuring 0.50 cm in height, 1.55 cm in width, and 25.00 cm in length with a mass of 219.1 g.

Recall that density is the ratio of the mass and volume of an object:

$\overline{){\mathbf{density}}{\mathbf{=}}\frac{\mathbf{mass}}{\mathbf{volume}}}$

Also, the volume of a rectangle is given by:

$\overline{){\mathbf{V}}{\mathbf{=}}{\mathbf{L}}{\mathbf{×}}{\mathbf{W}}{\mathbf{×}}{\mathbf{H}}}$

where:

L = length

W = width

H = height

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Density

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