Chem 18a Postlab 1 template (1)

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Yeshiva University *

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18B

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Chemistry

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Feb 20, 2024

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docx

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Lab report General Chemistry laboratory, Chem18 – Experiments 1 Name Leo Rahmey Bench B20 Lab day and section Wednesday 2B TA Nicole, Jolie Experiment # 1 Dates of Experiment: 8/31/2022 Date of Submission: 8/31/2022 Title: Density of Water DATA TABLE – Experiment 1 Paste on this page your completed Data Table from Excel for Exp. 1
Lab report General Chemistry laboratory, Chem18 – Experiments 1 Density of water I II III Uncertainty (equipment error) Weight: empty flask+stopper (g) 40.2248 39.9449 41.2414 +/- 0.0001 Weight: water+ flask+stopper (g) 50.1866 49.9159 51.2006 +/- 0.0001 Weight: water (g) 9.9618 9.9710 9.9592 +/- 0.0001 4 Volume (mL) 10.00 10.00 10.00 +/- 0.01 Density(g/mL) 0.9962 0.9971 0.9959 Deviation, |d trial -d aver | (g/mL) 0.00022 0.0007 0.00048 Aver. Density, d aver (g/mL) * 0.9964 St.dev. (g/mL) 0.00062 RSD (%) 0.062 2 Density from HCP (g/mL) (true value) 0.9975883 Temperature ( o C) 22.8 REA (%) 0.119 1 * report the average density with correct number of sig. figures here, use extra sig. figures in calculations My measurement is more (accurate or precise): Accurate The largest errors in my measurement are (systematic or random): Random SAMPLE CALCULATIONS: Sample calculations must be typed and include general formula with units, numbers used in calculations, and final results with correct units. Density of water - measurement #1: D = M/V 9.9618g/10.00mL = .9962 g/mL Average density of water: (D1 + D2 + D3… + Dn)/n = Average Density (.9962 + .9971 + .9959)/3 = .9964
Lab report General Chemistry laboratory, Chem18 – Experiments 1 Standard deviation for the density of water: RSD (density of water): REA (density of water): .
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