1- While cleaning out a laboratory shelf, you have made a mistake in labeling two bottles of ethanol and acetic acid. To identify the molecular structure of the contents of the bottle, samples were submitted for analysis using infrared spectroscopy, based on the IR results, draw the molecular structure of the molecule that would correspond to the spectrum for that compound. Justify your answer

Consider the analysis of a sample of iron using atomic absorbance spectroscopy. Which of the following statements are true? Select all that apply.   The iron sample is aspirated into the flame, where the solvent evaporates and the iron analyte is atomized. The hollow-cathode lamp for iron emits wavelengths of light unique for iron. A detector measures the amount of light generated by the flame and not absorbed by iron. The iron atoms in the flame absorb some of the light emitted from the hollow-cathode lamp. The flame replaces the cuvet of conventional spectrometers and the flame pathlength is typically 10 cm.

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Counterfeit drugs are a common problem in developing regions of the world. Oftentimes, counterfeit pills are made with compounds such as lactose. A lab technician has obtained the IR spectrum shown above for a sample reported to be citalopram, an antidepressant drug. Does the IR spectrum belong to citalopram or lactose? Explain your answer by describing what feature of the IR spectrum confirms your choice and describe what feature is missing from the IR spectrum for the other compound. A. citalopram B. lactose