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Unformatted text preview: Chem 223 Postlab Quiz 2 Answer Key September 10, 2010 1. The instruments gave no response at wavelengths shorter than 300 nm. To do experiments at wavelengths shorter than 300 nm, what would need to be changed? (1) A cuvette that is transparent below 300 nm would be required. Quartz is a good candidate material. 2. You measured the precision of 100% T with the cuvette left untouched and with removal and replacement of the cuvette. Were the results the same? If not, why not? (2) No – precision was poorer when the cuvette was moved. Pathlength changed sli...
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