# science

Density Calculations

Density is the mass of an object per unit volume. In this lab, you will be gathering data on the mass and volumes of objects, calculating their densities, and using their density to identify the object. [Block A on an electronic balance with a reading of 65.14 kg]
Record the mass of block A in your data table.
Note the level of the water BEFORE the block goes into it. [100 L]
Record the new level of the water when the block is completely submerged into the water. [Block A submerged in the water. The level is now at 103.38 L]
Subtract the old water level from the new water level.
This is the volume of Block A.
Record this in your data table.
Calculate the density of Block A by dividing the mass by the volume.
Record this in your data table.
Look on the table to find the substance that has the closest density to the one you calculated.

Record the mass of Block B in your data table. [Block B on an electronic balance with a reading of 0.64 kg]
Note the level of the water BEFORE the block goes into it. [100 L]
Record the new level of the water when the block is completely submerged into the water. [Block B submerged in the water. The level is now at 101 L]
Subtract the old water level from the new water level.
This is the volume of Block B.
Record this in your data table.
Calculate the density of Block B by dividing the mass by the volume.
Record this in your data table.
Look on the table to find the substance that has the closest density to the one you calculated.

Record the mass of Block C in your data table. [Block C on an electronic balance with a reading of 4.08 kg]
Note the level of the water BEFORE the block goes into it. [100 L]
Record the new level of the water when the block is completely submerged into the water. [Block C submerged in the water. The level is now at 105.83 L]
Subtract the old water level from the new water level.
This is the volume of Block C.
Record this in your data table.
Calculate the density of Block C by dividing the mass by the volume.
Record this in your data table.
Look on the table to find the substance that has the closest density to the one you calculated.

Record the mass of Block D in your data table. [Block D on an electronic balance with a reading of 3.10 kg]
Note the level of the water BEFORE the block goes into it. [100 L]
Record the new level of the water when the block is completely submerged into the water. [Block D submerged in the water. The level is now at 103.38 L]
Subtract the old water level from the new water level.
This is the volume of Block D.
Record this in your data table.
Calculate the density of Block D by dividing the mass by the volume.
Record this in your data table.
Look on the table to find the substance that has the closest density to the one you calculated.

Record the mass of Block E in your data table. [Block E on an electronic balance with a reading of 3.53 kg]
Note the level of the water BEFORE the block goes into it. [100 L]
Record the new level of the water when the block is completely submerged into the water. [Block E submerged in the water. The level is now at 101 L]
Subtract the old water level from the new water level.
This is the volume of Block E.
Record this in your data table.
Calculate the density of Block E by dividing the mass by the volume.
Record this in your data table.
Look on the table to find the substance that has the closest density to the one you calculated.

What is the density of Block A?
a0 Kg/L

What is the density of Block B?
a1 Kg/L

What is the density of Block C?
a2 Kg/L

What is the density of Block D?
a3 Kg/L

What is the density of Block E?
a4 Kg/L

Which block is the densest? Block

a5
Submit your data table and identify the substance each block is made of.

1. 👍
2. 👎
3. 👁
1. you have the volume of water displaced.
water has density of about 1kg/L
The weight of the block is reduced by the weight of the water.
Now, since density = mass/volume (not weight/volume) you are set to go.

1. 👍
2. 👎
2. Much typing. Very thorough. The instructions seem simple enough to follow to me. What is your problem is following the instructions. Wouldn't the density of A be 19.27 kg/L? Similar for the others.

1. 👍
2. 👎
👤
DrBob222

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