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Measuring the Density of Ball Bearings/ Density
Aaysha Dawood
Chem 1211L-198
September 7, 2012

Procedure:
The procedure for this lab was taken from the lab manual below: Block/McKelvy (2012). Laboratory Experiments for Chem 1211L & 1212L Cengage Learning (7th ed.), p. 5-19 (Measuring the Density of Ball Bearings/Density). No changes occurred that were different from the procedure listed above. Data: Measuring the Density if Ball Bearings

| Ball 1| Ball 2| Ball 3| Ball 4|
Diameter [cm]| 2.50 cm| 1.97 cm| 1.66 cm| 1.25 cm|
Mass [g]| 66.6982 g| 28.1675 g| 16.3009 g| 8.3504 g|

Area [cm2]| 19.63 cm2| 12.19 cm2| 8.66 cm2| 4.91 cm2|

Volume [cm3]| 8.18 cm3| 4.00 cm3| 2.40 cm3| 1.02 cm3|

Data: Density
Aluminum Cylinder|
Mass of aluminum cylinder| 17.1420 g|
Height of aluminum cylinder| 5.00 cm|
Radius of aluminum cylinder| .635 cm|
Final buret reading| 10.20 ml|
Initial buret reading| 0.0 ml|
Volume of water delivered | 10.20 ml|
Calibration mark on gradated cylinder touched by meniscus| 16.5 ml|

Sand|
Mass of graduated cylinder plus sand| 28.3548 g|
Mass of empty graduated cylinder| 10.6440 g|
Mass of sand| 17.7108 g|
Final buret reading| 20.20 ml|
Initial buret reading| 10.20 ml|
Volume of water delivered| 10 ml|
Calibration mark on graduated cylinder touched my meniscus| 17 ml|

Table salt| |
Mass of graduated cylinder plus table salt| 24.4168 g|
Mass of empty graduated cylinder| 9.9965 g|
Mass of table salt| 14.4203 g|
Final buret reading| 30.20 ml|
Initial buret reading| 20.20 ml|
Volume of water delivered | 10.2 ml|
Calibration mark on graduated cylinder touched by meniscus| 15.8 ml|

Table salt plus alcohol|
Mass of graduated cylinder plus table salt| 24.6094 g|
Mass of empty graduated cylinder| 10.5981 g|
Mass of table salt| Could not be determined|
Volume of alcohol delivered from pipet| 10...
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