Lab #1 Densities of Liquids and Solids

Lab #1 Densities of Liquids and Solids - Densities of...

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Densities of Liquids and Solids by Erin Samplin Lab Instructor: Xiaoxiao Li September 11, 2007
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Purpose To determine the identity of unknown samples of liquids and solids through calculations of their densities. Results and Discussion Experimental procedures were practiced using a sample of distilled water. A sample of the water was taken using a pasteur pipette. A beaker was measured before and after the addition of the sample using an electronic balance. The density of water was then calculated. Mass of Water – 9.950 Grams Volume of Water – 10.0 mL Density = Mass = 9.950 grams = 0.995 g/mL Volume 10.0 mL The accepted density for water is 1.0 g/mL. The percent error was thus calculated to quantify the accuracy of the results. Percent error = accepted value – measured value x 100 = 1.0 – 0.995 x 100 = 0.5% accepted value 1.0 The experimental procedures were then repeated using a sample of unknown liquid #3. This procedure was repeated three times.
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This note was uploaded on 03/20/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell.

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Lab #1 Densities of Liquids and Solids - Densities of...

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