A student investigates an unknown liquid by measuring its mass for several poured volumes
CHEMISTRY · Multi-part · CBSE · Chemistry · The Amazing World of Solutes, Solvents, and Solutions · The Amazing World of Solutes, Solvents, and Solutions
Problem
A student investigates an unknown liquid by measuring its mass for several poured volumes. The data are summarized in the table below.
Volume (mL) Mass (g)
10 7.9
20 15.8
30 23.6
40 31.5
50 39.4
(a) If you were to plot mass (vertical axis) versus volume (horizontal axis), describe the expected overall shape of the graph and what feature of that graph would provide the best estimate of the liquid’s density.
(b) Use the data to obtain a numerical value for the density of the liquid, stating appropriate units.
(c) Using your result from part (b), calculate the volume of this liquid, in milliliters, required to have a mass of 0.250 kg.
(d) Discuss whether assuming the liquid is incompressible over the measured range of volumes is reasonable, citing evidence from the data or your graph description.