CHEMISTRY 231
Spring, 2013 Homework Set 1
Complete for
quiz on Feb. 6
1.
Download the file on the Chem 231 website labeled filterHW.txt. (this
gives the time in minutes and the signal in fluorescence units) and transfer to
an Excel File. Print a table from Excel
showing two columns collected over the first 30 s period.
2. Make a plot of the raw data from above and also data processed with a 2 s moving average over both the first 30 s and over the first 4 min. This can be done by either using Excel's Plotting routines or by creating a 2 s moving average using a new column in Excel.
3.
Given the following HPLC data, determine the concentration of X in an
unknown and the 95% uncertainty in X.
Calibration Data......................................................... Unknown
Data
Levoglucosan conc | Levoglucosan Area | Levoglucosan conc
|
Levoglucosan Area
|
(ug/mL)
|
(ug/mL)
|
||
0.5
|
469.11
|
Unknown
|
2276.40 |
1 | 826.57
|
||
2 | 1578.66
|
||
5 | 3973.85
|
||
10 | 8043.47
|