CHEM 1211L PRINCIPLES OF CHEMISTRY I LAB

FALL 2008

FINAL EXAMINATION

TAKE HOME PART

Name:

Date:

Last 4 digits of your ABAC ID:

Enter the following data in a spreadsheet and use the data to make a graph. The graph must show the same characteristics as the model that you can access through the link labeled “Density vs Percentage Graph”. In order to make reading the scales on the graph easier, make sure that the axes show minor tick marks. Note that the graph in the model is drawn using a different data set from the one that you are handed. The axes ranges should show no “dead space”, i.e. the graph should cover all available space.

Atmospheric Pressure	Air Density
(mm Hg)	(g/L)
710	1.1036
720	1.1242
730	1.1407
740	1.1501
750	1.1702
760	1.1815
770	1.2015

Determine GRAPHICALLY and manually the atmospheric pressure that corresponds your personal air density of 1.1ABC, where A, B, and C are the 3 last non-zero digits in your ABAC ID. Show on the graph how you reach your answer, and indicate what that answer is. 80% of the grade will be reserved for the graphical details on how you find the concentration. Calculations, by you or the graphic program, will not be accepted.

Notes:

* Turn in both the instruction sheet, the graph and the table, separately.

* An example of the expected graph is provided. Be aware that the data used to make that graph are not the same as the ones you are given to work on.

* A grade of zero will be given to your work:

- If you work with any other numbers than the ones assigned to you

- If there is evidence of copying. The penalty will apply to both the source and the destination of the copying.

Good luck.