References to figures are given in italic type. Textual references to endnotes are indicated with the page number followed by n and the endnote number.absorption spectra, 124–5, 144, 183absorption spectroscopy, 3, 103, 117, 146, 190, 237acetate (C2H3O2), 82acetic acid (C2H4O2), 82, 85acetone (C3H6O)...