CHEM 2001 : Exam II Key SP 2011
Document Summary
Make sure you know what is being asked. Think about how to answer the question before you start writing. Use complete sentences in all replies unless stated otherwise or you will receive no credit. Make sure that in numerical problems you present your work in a clear, easy-to-follow fashion. Use the correct number of significant figures in all calculations. You should have five (5) pages. (6 pts) 1. Do not use acronyms, and be as specific as is possible. A hollow cathode lamp employing the zero-valent element li would be required. {+3 for stating hollow cathode lamp, +2 for stating lithium and +1 for li(0)} (7 pts) 2. Referring to 1 above and the table at right, what wavelength of light would you choose for the lithium analysis while applying the beer- I would choose the 670. 7 nm line for the analysis because the sensitivity and the limit of detection are higher for this wavelength.
