3) Getting Numbers from that Data
- 1. Getting Data From Spectra First Lets Make Sure: We Are All On The Same Page Bruce Phebus
- 2. What you should have: If you don’t you are way Behind! • Wavelengths calculated for all the peaks on your spectrum • Peaks assigned to R and P branches J” & J’ values assigned to each peak. • All your data organized, labeled, and given to your lab partners.
- 3. Ahh now to Linest!
- 4. What are we doing to today? • We will calculate all of our constants! ωe ωexe Be α • We will have reduced mass, μ, for each of our isotopes H79Br & H81Br • Isotopic abundance Br 79 is 50.7% • Isotopic abundance Br 81 is 49.3% Label 79 and 81 peaks • Uncertainties as well
- 5. What are we doing to today continued… • We will calculate all of our constants! k = The spring constant De o = Dissociation Energy Re = Bond length • Shaowei’s slides have the equations! “Data Analysis and Lab Report” • Note k and k the Boltzmann constant are not the same even though they look it on his slides!
- 6. Questions Ask Them! • Make sure you keep up with the pace of the class as we don’t meet often falling behind one day means falling behind a week! • Do Differential Error Prop Now!
- 7. On the Subject of Reff’s: • You need to look up references for your reports –They are a graded portion of your report • A hint for the HBr report “T.A. Ford” – Very handy but you can’t use the reference. – “A third year chemistry project” doesn’t count as citation worthy science. You figure it out.
- 8. Next Week: • You should not be doing data analysis you should be writing and making certain your data is correct.