# A rubber stopper weighing 8.554 g displaces 7.0 mL of

A rubber stopper weighing 8.554 g displaces 7.0 mL of water in a graduated cylinder. Calculate the density of the solid rubber stopper.
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Alex Sheppard
Step 1
The volume of the water displaced by the rubber stopper is equal to the volume of the rubber stopper. Hence the volume of rubber stopper is 7.0 milliliters or $7.0c{m}^{3}$.
Step 2
The density of the rubber stopper is obtained by dividing the mass of rubber stopper by its volume.
$Density=\frac{mass}{volume}$
$=\frac{8.554g}{7.0mL}$
$=1.2\frac{g}{m}L$

Navreaiw
Step 1
Given,
Weight of the Rubber Stopper $=8.554g$
Step 2
We know,
$Density=\frac{Mass}{Volume}$
Or, $Density=\frac{8.554g}{7.0mL}$
Or, $Density=1.222\frac{g}{m}L$
Therefore, the density of the solid rubber is 1.222g/mL