Question

You are given and irregular shaped lump of a material and determine that it has a mass of 36.0000 g. When placed in a graduated cylinder that initially contains exactly 22 mL of water, the water level rises to 27 mL. What is the density of the unknown material?

Answer 1

Answer: The density of unknown material is 7.2 g/mL

Explanation:

We are given:

Volume of water already in the container, $V_1$ = 22 mL

Volume of water rise in the cylinder, V = 27 mL

Volume occupied by unknown material = $(V-V_1)=(27-22)mL=5mL$

To calculate density of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

We are given:

Mass of unknown material = 36.0000 g

Volume of unknown material = 5 mL

Putting values in above equation, we get:

$\text{Density of unknown material}=\frac{36.0000g}{5mL}\\\\\text{Density of unknown material}=7.2g/mL$

Hence, the density of unknown material is 7.2 g/mL