13) Explain how absorption of electromagnetic radiation occurs in infrared (IR) spectroscopy experiments. 14) If you were to design an experiment to determine the differences between some of the energy levels in a pure sample of a molecular compound, would you choose to use an infrared (IR) spectrometer or an ultraviolet/visual (UV/Vis) spectrometer? Justify your answer. 15) If you were to design an experiment to determine the different types of atoms and bonds that make up a pure sample of an unknown compound, would you choose to use an infrared (IR) spectrometer or an ultraviolet/visual (UV/Vis) spectrometer? Justify your answer. 16) If you were to design an experiment to identify an unknown compound, would you choose to use an infrared (IR) spectrometer or an ultraviolet/visual (UV/Vis) spectrometer? Justify your