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INDEX                                       347


               Visible spectrum of hydrogen, 51–52, 52f      Weighted average, 41–42
               Voltage, 209                                  Writing formulas, 86–101
               Volume(s), 12t, 13t, 15, 295                  Wood alcohol, 269
                 additive, 164
                                                              2
               Volumetric flask, 165f, 184p                   x key, 302p
               Volumetric glassware, 165f                     X A (mole fraction of A), 220

               Water, 88                                     Yield, percent, 157–158p
                 autoionization of, 249–250                  -yl, 267
                 vapor, 184                                  -yne, 265
               Wavelength, of photon, 52
               Weak acid(s), 93, 127, 246                     Z (atomic number), 41
               Weight, 2, 12                                 Zeros as significant digits, 18–19
   353   354   355   356   357   358   359   360   361