For each hydrocarbon spectrum, determine whether the compound is an alkane, an alkene, an alkyne, or an aromatic hydrocarbon, and assign the major peaks above (to the left of) 1600 cm-1. More than one unsaturated group may be present?

wavelength (um) 3.5 4 45 5 5.5 6 7 89 10 12 13 14 15 16 2.5 10 80 20 0 4000 3500 2500 2000 1800 1600 1400 1200 1000 800 600 wavenumber (cm) wavelength (um) 5 5.5 6 2.5 100 3 3.5 4 4.5 8 9 10 12 13 14 15 16 80 20 0 3000 2000 1800 1600 1400 1200 1000 800 600 wavenumber (cm wavelength (m) 2.5 100 3.5 4 4.5 5 5.5 678 9 10 2 13 14 15 16 40 T 4000 3500 2000 1800 1600 1400 1200 1000 wavenumber (cm)