Question

density is mass per unit of volume. which pair of lab instruments would a student use to measure the density of seawater?
○ a caliper and a flask
○ a stopwatch and a beaker
○ a balance and a beaker
○ a meter stick and a temperature probe

Explanation:

Density is calculated as mass per unit volume. A balance is used to measure mass and a beaker (or other volumetric containers like a flask) can be used to measure the volume of a liquid (seawater in this case).

Answer:

B. a balance and a beaker