Lab Report 1 - Measurements of Mass and Volume...

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Measurements of Mass and Volume; Density (Lab #1) Jesse LaSalle TA: James Martin Experiment Completed: September 20, 2007 Lab Report Submitted: September 27, 2007
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I) Purpose : The purpose of the experiment was to learn and practice techniques for using a top- loading balance, an analytical balance, a buret and a pipet in order to determine a liquid’s density. II) Procedure : Casey, J. and R. Tatz (2008). Measurements of Mass and Volume; Density. General Chemistry Laboratory Experiments , Hayden McNeil. Vol.1: 1-10. III) Data : (See attached sheet #1.) IV) Calculations : (See attached sheet #2.) V) Error analysis/Conclusion : There were several possible sources of error when conducting this experiment. In part C of the experiment, my measurements for the empty beaker’s mass were different by more than a tenth of a gram. This could be explained by a minute amount of water left behind after rinsing the beaker. Also, the measurement of the volume of the unknown may not have been exact in either the buret or pipet. This lab gave a fair amount of practice with several different measurement devices
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