A Recalculation of the Atomic Weights Volume 54 - Softcover
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1910 Excerpt: ...was washed with water and acetone and weighed. The finely divided mercury was again dissolved, and with a little mercury remaining in solution, was deposited electrolytically upon a gold cathode. Its weight was then added to that of the globule. The following results, with vacuum weights, were obtained: Hence Hg=200.478. Combining this with the earlier determinations we have Turner 73.791, ±.0050 Millon 73.845, ±.0100 Svanberg 73.795, ±.0060 Hardin 73.829, ±.0012 Easley 73.8695, ±.0012 General mean 73.8459, ±.0008 1 Journ. Amer. Chem. Soc., 31, 1207. 1909. In the filtrate from the mercury the chlorine was precipitated as silver chloride and so weighed. The results were as follows, with vacuum weights: HgCl,. AgCl. Ratio. 10.50276 11.08744 94.7257 9.03634 9.54027 94.7179 23.43239 24.73606 94.7297 10.94042 11.55158 94.7093 11.11409 11.73470 94.7113 16.63910 17.56808 94.7121 General mean, Hg = 200.054, ±.0027 Mathematically, Hardin's determinations seem to outweigh the others. They are, moreover, comparatively concordant and by four methods. But it is quite possible that Easley's much higher figures may prove to be more correct. His work is to be continued; but, until it is finished, it would be unwise to adopt his results exclusively. The atomic weight of mercury is still much in doubt. BORON. In the first edition of this book the data relative to horon were few and unimportant. There was a little work on record by Berzelius and by Laurent, and this was eked.out by a discussion of Deville's analyses of boron chloride and bromide. As the latter were not intended for atomic weight determinations they will be omitted from the present recalculation, which includes a number of later researches. Berzelius based his determination u...
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- PublisherRarebooksclub.com
- Publication date2012
- ISBN 10 1130590046
- ISBN 13 9781130590043
- BindingPaperback
- Number of pages144
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