CHEM 1&2 Lab Manual & worksheets pg 218

CHEM 1&2 Lab Manual & worksheets pg 218 - Graph...

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Plotting Experimental Data General Chemistry I and II Lab Manual Dakota State University page 218 of 232 Appendix: Example of graphing; boiling points versus molecular weight. Experimental data: Molecular Formula/Name Molecular Weight in g/mol Boiling Point in o C 1 C 6 H 14 / Hexane 86.18 123 C 7 H 16 / Heptane 100.21 104 C 8 H 18 / Octane 114.23 124 C 9 H 20 / Nonane 128.26 145 C 10 H 22 / Decane 142.29 198 1 In order to simulate expermimental data, this column was obtained by taking the published boiling points for these liquids and randomly adding +- 15% error.
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Unformatted text preview: Graph Ranges: x axis range (molecular weight): 10 - 150 g/mol (this will be the width of the graph paper) y axis range (boiling point): 50 - 200 o C (this will be the length of the graph paper) Graph Paper Divisions: x (width): 39 before axis; 35 after axis; (150-10)/35 = 4 g/mol per division y (length): 52 before axis; 50 after axis; (200-50)/50 = 3 o C per division Boiling point of methane (16 g/mol) from the line: approx. 55 o C....
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This note was uploaded on 01/27/2012 for the course CHM 2045 taught by Professor Josephwalter during the Fall '11 term at Dakota State.

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