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A strong carbonyl near ~1740 cm^-1 plus strong C-O bands 1240-1020 cm^-1 indicates most strongly:

The carbonyl band position can shift slightly due to conjugation and hydrogen bonding.

Water vapor and CO2 can imprint features into FTIR spectra if background subtraction is poor.

The region below ~1500 cm^-1 is commonly called the ________ region.

Which feature distinguishes ethyl acetate from acetone and Methyl Ethyl Ketone in the spectra?

Identify what is the best wavelength(s) to run samples containing: Co

If the ATR crystal is not fully dried after IPA cleaning, residual IPA can introduce additional bands into the next sample spectrum.

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