Question

f. density of a solid
table 3.12 (data)
mass of beaker + stopper 110.26g
mass of empty beaker 92.72g
cylinder reading with stopper 26.0ml
cylinder reading without stopper 20.0ml
table 3.13 (report)
stopper mass
stopper volume
stopper density
g. summary
table 3.14 (report)
average volume difference
average percent difference
graduated cylinder
pipet
buret

Explanation:

Step1: Calculate stopper mass

Subtract mass of empty beaker from mass of beaker + stopper.
$119.26 - 92.72= 26.54$ g

Step2: Calculate stopper volume

Subtract cylinder reading without stopper from cylinder reading with stopper.
$26.0 - 20.0 = 6.0$ mL

Step3: Calculate stopper density

Use formula $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume.
$
ho=\frac{26.54}{6.0}\approx4.42$ g/mL

Answer:

Stopper mass: 26.54 g
Stopper volume: 6.0 mL
Stopper density: 4.42 g/mL