Subject
Cadmium Books
Best books
Harry C. (Harry Clary) Jones
Determination of the Atomic Weight of Cadmium and the Preparation of Certain of Its Sub-Compounds
"Determination of the Atomic Weight of Cadmium and the Preparation of Certain of Its Sub-Compounds" by Harry C. Jones is a scientific publication written in the late 19th century. This dissertation was presented to the Board of University Studies of the Johns Hopkins University for a Doctor of Philosophy degree and focuses on the chemical processes and methodologies for determining the atomic weight of cadmium as well as the preparation of specific cadmium sub-compounds. The book delves deeply into the historical context and previous research regarding cadmium's atomic weight, noting various discrepancies and methodological challenges faced by earlier scientists. It also details Jones's own experimental techniques, including the purification of cadmium, measurement methods, and the successful synthesis of cadmium oxalate, hydroxide, and halide compounds. The systematic approach taken in the experiments leads to refined values for cadmium's atomic weight, contributing to ongoing discussions and developments in the field of chemistry during that period. Overall, it serves as both a record of experimental findings and a reflection on the scientific methods used in the study of chemical elements at the time.
John Emery Bucher
An examination of some methods employed in determining the atomic weight of Cadmium
"An Examination of Some Methods Employed in Determining the Atomic Weight of Cadmium" by John E. Bucher is a scientific thesis published in the late 19th century, specifically in 1894. This scholarly work presents a detailed examination of various methods used to ascertain the atomic weight of cadmium, demonstrating the discrepancies in results obtained by different chemists over time. The book serves not only as a report on experimental findings but also as a historical account of the scientific community's efforts to establish more accurate chemical constants. In this extensive thesis, Bucher explores multiple techniques for determining cadmium's atomic weight, such as the oxalate, sulphide, chloride, bromide, and oxide methods. He meticulously outlines the procedures for each method, the materials used, and the resulting atomic weight calculations. Additionally, Bucher discusses potential sources of error in each method, ultimately suggesting that significant variability arises from impure reactants and incomplete reactions. He presents a tentative average atomic weight of cadmium at approximately 112.38, while emphasizing that these results are not definitive, highlighting ongoing challenges in chemical analysis during that period.
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