Density of Liquids Lab

Density of Liquids Lab - Ryan O'Hearn Chemical Principles I...

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Ryan O’Hearn Chemical Principles I Lab - 1011.205.51 Density of Liquids 23:17:47 Purpose The purpose of this lab is to practice and develop skills when working with volumetric glassware in a lab environment finding the density of liquids. Also, learn how to calibrate a 10mL volumetric pipet and a 100mL volumetric flask. Procedure See “Experiment 2: Density of Liquids and Use of Volumetric Glassware”, Chemistry 205 Lab Data Tables, Graphs A) Table 2-I (Calibration of 10mL Volumetric Pipet) Trial Temp = 23 o C Mass Water (g) Conversion Factor (mL/g) Volume of Pipet (mL) Avg mL, Std Dev, 90% Certainty With Portion 3 9.9790g 1.0035mL/g 10.013mL Avg. mL=9.8689mL With Portion 2 9.8860g 1.0035mL/g 9.9200mL Dev.=0.1753g/mL With Portion 1 9.6400g 1.0035mL/g 9.6737mL 90% Cert = 9.5733 – 10.1645 Beaker = 66.282g N/A N/A N/A N/A Table 2-III (Calibration of 10mL Graduated Pipet) Trial Temp = 23 o C Mass Water (g) Conversion Factor (mL/g) Volume of Pipet (mL) Avg. mL, Std Dev, 90% Certainty With Portion 3 10.156g 1.0035mL/g 10.192mL Avg. mL=10.187mL With Portion 2 10.109g 1.0035mL/g 10.144mL Dev.=0.0399g/mL With Portion 1 10.188g 1.0035mL/g 10.224mL 90% Cert = 10.119 – 10.254 Beaker = 66.279g N/A N/A N/A N/A B) Table 2-IV (Calibration of 100mL Volumetric Flask) Trial Temp = 23 o C Mass Water (g) Conv. Factor (mL/g) Vol. Flask (mL) Misc. Trial 1 99.401g 1.0035mL/g 99.749mL Avg. =99.747mL Trial 2 99.341g 1.0035mL/g 99.689mL Dev=.05703g/mL 1
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Trial 3 99.455g 1.0035mL/g 99.803mL 90% Cert. = 99.651 – 99.843 D) Table 2-V (Density of NaCl Solution) Trial Temp = 23 o C Mass Beaker and NaCl Solution (g) Mass NaCl Solution (g) Volume of Pipet (mL) Density of NaCl Solution (g/ mL) Avg. Den, Std Dev, 90% Certainty With Portion 3 61.318g 10.598g 9.8689mL 1.0739g/mL Avg. Density = 1.0736g/mL
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Density of Liquids Lab - Ryan O'Hearn Chemical Principles I...

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