A Recalculation of the Atomic Weights
A Recalculation of the Atomic Weights
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LEAD. 127 LEAD.
For the atomic weight of lead we have to consider experiments made upon the oxide, chloride, nitrate, and sulphate. The researches of Ber- zelius upon the carbonate and various organic salts need not now be considered, nor is it worth while to take into account any work of his done before the year 1818. The results obtained by Dobereiner* and by Longchamp f are also without special present value.
For the exact composition of lead oxide we have to depend upon the researches of Be...rzelius. His experiments were made at different times through quite a number of years ; but were finally summed up in the last edition of his famous *' Lehrbuch. " J In general terms his method of experiment was very simple. Perfectly pure lead oxide was heated in a current of hydrogen, and the reduced metal weighed. From his weighings I have calculated the percentages of lead thus found and given them in a third column : Earlier Results.
8. 045 g rm - PbO S ave 74675 grm. Pb. 92. 8217 per cent.
What to read after A Recalculation of the Atomic Weights?
You can find similar books in the "Read Also" column, or choose other free books by Frank Wigglesworth Clarke to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
LEAD. 127 LEAD.
For the atomic weight of lead we have to consider experiments made upon the oxide, chloride, nitrate, and sulphate. The researches of Ber- zelius upon the carbonate and various organic salts need not now be considered, nor is it worth while to take into account any work of his done before the year 1818. The results obtained by Dobereiner* and by Longchamp f are also without special present value.
For the exact composition of lead oxide we have to depend upon the researches of Be...rzelius. His experiments were made at different times through quite a number of years ; but were finally summed up in the last edition of his famous *' Lehrbuch. " J In general terms his method of experiment was very simple. Perfectly pure lead oxide was heated in a current of hydrogen, and the reduced metal weighed. From his weighings I have calculated the percentages of lead thus found and given them in a third column : Earlier Results.
8. 045 g rm - PbO S ave 74675 grm. Pb. 92. 8217 per cent.
What to read after A Recalculation of the Atomic Weights?
You can find similar books in the "Read Also" column, or choose other free books by Frank Wigglesworth Clarke to read onlineMoreLess
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