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Problem 1: Describe the vibrational normal modes of CO2 and H20, and then discuss which mode of each molecule is infrared active and which mode is inactive. (a) The four normal modes of CO2 v, (1388 cm- v (2349 cm-) , (667 cm- ,(667 cmt) (b) The three normal modes of H20 P, (3652 cm) (1595 cm) (3756 cm-)
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388 cm Nmal modes HO 召/个 IR actine 01 159 5 cm I

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