Worksheet: Density Measurements

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In this worksheet, we will practice describing methods for measuring solid and liquid densities, identifying errors, and troubleshooting mistakes.

Q1:

An experiment calls for 125 g phosphoric acid. What size of flask would be most appropriate to contain the acid? The density of phosphoric acid is 1.83 g/mL.

A50 mL
B250 mL
C500 mL
D150 mL
E1,000 mL

Q2:

A piece of rebar is weighed and then submerged in a graduated cylinder partially filled with water, as shown in the figure. The dry mass of the rebar is 69.658 g.

To 2 significant figures, what is the density of the piece of rebar?

Which of the following metals is most likely to be present in the piece of rebar?

AAluminum (density = 2.70 g/cm³)
BChromium (density = 7.19 g/cm³)
CNickel (density = 8.91 g/cm³)
DIron (density = 7.87 g/cm³)
ETitanium (density = 4.51 g/cm³)