smhs physics ( mccoy )

1. smhs physics (mccoy) Formal Laboratory Report Format

2. Lab Reports • Typewritten reports documenting your experimental results. • Be sure to clearly label each section! • Use complete sentences. • Double space your report. • Title Page • Objective • Introduction • Procedure • Data • Results and Calculations • Discussion • Conclusion • Questions

3. Title Page • This will identify the experiment, you, the course, your class, your instructor, and the date(s) the experiment was performed. Very important so I can keep track of what you are handing in! Exploring Gases: The Determination of the Ideal Gas Constant, Molar Volume and Percent Potassium Chlorate in a Mixture Jane Smith Lab Partner: (if appropriate) Chemistry 120 Section 5399 Instructor: D. Vance September 3, 2007 completed September 17, 2007 turned in

4. Objective • Why are you doing this experiment? Objective: To experimentally find the ideal gas law constant, R, calculate the percent error in the experimental ideal gas law constant, the molar volume, its percent error, and the percentage…

5. Introduction • This section tells a little bit about the theory of the experiment and how it will be done. • Be sure to label your reactions (i.e. rxn 1…) and your formulas/equations ( i.e. eq 1…) so that it is easier to refer to them in the text. • Introduction: • In this experiment experimental values for the ideal gas law constant, R, and the molar volume of a gas, Vm, will be found. Oxygen gas will be formed by the decomposition of potassium chlorate: MnO2 2 KClO3 (s)  3 O2 (g) + 2 KCl (s) rxn 1 heat The oxygen gas will be…

6. Procedure • Reference the procedure used and note any deviations from the published procedure. • Safety and Waste treatment should be noted here too. Procedure • Write a detailed description of how you completed the experiment.

7. Data • Insert all data from the experiment. Do not analyze or manipulate the data – this section is merely to publish exactly what you found without coming to any conclusions.

8. Results and Calculations • Tabulate data (you may copy and paste the spreadsheet) and any calculated values. • Be sure to show sample calculations. (These may be hand written.) • For non-numerical labs, summarize the data generated. Results and Calculations Table 1: Decomposition of KClO3 Data Sample Calculation xxx.xxg-xx.xxg=xx.xxg Etc…

9. Discussion • This is where you get to explain your results and talk about any errors that may have occurred. Discussion: • The value of the ideal gas law constant was found be to 61.2 L torr mol-1 K-1, that is a percent error of 1.9%. This value is very close to the actual value of 62.4 L torr mol-1 K-1. One possible source of error could be that the volume of water in the florence flask and the beaker was not equalized before the…

10. Conclusion • This is where you give the final result. This is essentially the punch line-- Conclusion • The ideal gas law constant was found to be 61.2 L torr mol-1 K-1 with a percent error of 1.9%, the molar volume was found to be 25.3 L mol-1 with a percent error of 12.8%, and the percent…

11. Questions • Answer any questions posed in the lab here.