INTRODUCTION:

The density of a substance is defined as the mass divided by the volume: d=m / v. Density is a physical property of a substance that does not depend on the ammount of material present and is therefore called an intensive property.
In this experiment, you will find the density of water for three different volumes.

MATERIALS:

50 - mL graduated cylinder
Balance
Dropper
Distilled water

PROCEDURE:

1. Find the mass of an empty, dry 50 - mL graduated cylinder to the nearest 0.01 g and record the mass on the data table.

2. Add exactly 10.0 mL of water to the cylinder. Remember, the bottom of the meniscus should just be touching the 10.0 mL line. [ Hint: Add water up to about the 9 mL mark and use a dropper to reach the 10.0 mL mark.]

3. Find the mass of the cylinder and 10 mL of water to the nearest 0.01 mL. Record the mass on the data table.

4. Repeat steps 2 and 3 with 30.0 mL of water.

5. Repeat steps 2 and 3 with 50.0 mL of water.

DATA TABLE:

Mass of empty graduated cylinder. ____________ g

Mass of graduated cylinder and 10.0 mL of water. ____________ g

Mass of graduated cylinder and 30.0 mL of water. ____________ g

Mass of graduated cylinder and 50.0 mL of water. ____________ g

CALCULATIONS:

6. Find the mass of the 10.0 mL sample of water. This is the mass of the cylinder and 10.0 mL sample - the mass of the cylinder.

Mass of the 10.0 mL sample = ________ g

7. Calculate the density of the 10.0 mL sample. Remember: density = mass / volume.
The unit for density will be ^g / _mL.

Density for 10.0 mL sample = ________ ^g / _mL

8. Now repeat steps 6 and 7 for the 30.0 mL and 50.0 ml samples.

Mass of the 30.0 mL sample = ________ g

Density for 30.0 mL sample = ________ ^g / _mL

Mass of the 50.0 mL sample = ________ g

Density for 50.0 mL sample = ________ ^g / _mL

The density of water is 1.0 ^g / _mL.

How do your three answers compare to the accepted value?

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