Question

A rock is placed in a graduated cylinder filled with 15.0 mL of water. The water level rises to 18.2 mL. What is the density of the rock if its mass is 9.8 grams

Answer 1

To find the density of the rock, you can use the formula for density, which is:

Density = Mass / Volume

In this case, you have the mass of the rock (9.8 grams) and the change in volume of the water when the rock is placed in the graduated cylinder (18.2 mL - 15.0 mL = 3.2 mL).

Now, convert the volume to cubic centimeters (1 mL = 1 cm³):

3.2 mL = 3.2 cm³

Now, you can calculate the density:

Density = Mass / Volume
Density = 9.8 grams / 3.2 cm³

Density ≈ 3.0625 grams per cubic centimeter (g/cm³)

So, the density of the rock is approximately 3.0625 g/cm³.