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8/11/14

The purpose of this lab is to calculate the density of aluminum with different masses and volumes of aluminum bits and water.

Aluminum Bits balance graduated cylinder water cupcake liners paper towels

1. First, get materials ready for the experiment by cleaning and/or drying materials
2. Mass the cupcake liner
4. Place some aluminum pebbles into the cupcake liner and place it on the balance. Record the mass
5. Subtract the mass of the cupcake liner from the new total mass.
6. Place the massed aluminum pellets into the graduated cylinder filled with water.
7. Record the change in volume.
8. empty out the water slowly then retrieve the aluminum bits and dry them thoroughly.
9. repeat steps 2-8 for 10 trials

Data table of Aluminum Density Experiment Trials
Mass of Al
Initial Volume
Final Volume
Volume of Al
Density
6.39 g
59.8 ml
61.5 ml
1.7 ml
3.75 g/ml
7.07 g
39. 5 ml
42.1 ml
2.6 ml
2.72 g/ml
9.22 g 60.0 ml
63.0 ml
3.0 ml
3.07 g/ml
5.08 g
53.9 ml
53.9 ml
2.0 ml
2.54 g/ml
9.21 g
48.1 ml
51.0 ml
2.9 ml
3.18 g/ml
12.28 g
56.7 ml
61.5 ml
4.8 ml
2.56 g/ml
11.68 g
58.6 ml
63.1 ml
4.5 ml
3.00 g/ml
8.05 g
57.9 ml
61.0 ml
3.1 ml
3.00 g/ml
9.95 g
67.0 ml
70.7 ml
3.7 ml
2.69 g/ml
7.26 g
59.5 ml
62.3 ml
2.8 ml
2.60 g/ml

Final Volume - Initial Volume = Volume of AL
61.5ml - 59.8ml = 1.7ml
Volume of Al
1.7 ml
2.6 ml
3.0 ml
2.0 ml
2.9 ml
4.8 ml
4.5 ml
3.1 ml
3.7 ml
2.8 ml

Density = Mass of Al / volume of Al

Density
3.75 g/ml
2.72 g/ml
3.07 g/ml
2.54 g/ml
3.18 g/ml
2.56 g/ml
3.00 g/ml
3.00 g/ml
2.69 g/ml
2.60 g/ml

(D1 + D2 + … D10 ) / 10 = Average Density

3.75 g/ml
2.72 g/ml
3.07 g/ml
2.54 g/ml
3.18 g/ml
2.56 g/ml
3.00 g/ml
3.00 g/ml
2.69 g/ml
2.60 g/ml
_________
29.11 g/ml / 10 = 2.911g/ml

(D1 + D2 … D60 ) / 60 = Class Average Density

Mass
Volume

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