Densities of Liquids and Solids- Heather

# Densities of Liquids and Solids- Heather - Densities of...

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Densities of Liquids and Solids by Heather Bader Lab Instructor: Deepti Gadi September 11, 2007

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Results and Discussion: An experiment was designed and performed to determine the densities of an unknown liquid and solid with the greatest accuracy. First a test of the accuracy of the experimental procedure was preformed on distilled water, because of its known density. The data and calculated results were tabulated (Table 1). Table 1: Density of Water Trial # Mass (g) Volume of Water (mL) Density (g/mL) 1 91.944 100 .919 2 91.944 100 .919 3 91.944 100 .919 Density=Mass/Volume Density=91.944g/100mL=.919g/mL The average of the three trials of water, .919g/mL + .919g/mL + .919g/mL = .919g/mL 3 The average deviation of the three trials of water, [.919g/mL- .919g/mL] + [.919g/mL- .919g/mL]+ [.919g/mL-.919g/mL] = 0g/mL 3 The relative average deviation of the three trials of water, 0g/mL x100 = 0% .919g/mL The results for the three trials of distilled water were extremely precise. The percent error of the three trials, [(1.00g/mL- .919g/mL)/ 1.00g/mL] x100% = 8.1% The accuracy was under 10%, so it was a successful test of the experimental procedure.
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• Fall '05
• CHIRIK,P
• Chemistry, unknown liquid, relative average deviation

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