Laboratory Methods of Inorganic Chemistry, 2nd English Ed. 1928
DISTILLATION. 5 solved again in the mother liquor. By slow crystallization, especially with a deep body of solution, large cryst ...
INTRODUCTORY. somewhat higher, a glass tube about the size of one's finger simply slipped over the side arm of the distilling fl ...
DISTILLATION. 7 If the vapors attack cork the apparatus can be made tight with wads of asbestos fibers pressed into the joints, ...
8 INTRODUCTORY. narrow piece of glass tubing, open at the top where it rises above the stopper, and at the bottom ending in a lo ...
CHAPTER I. The Elements THE PERIODIC CLASSIFICATION OF THE ELEMENTS. THE periodic recurrence of properties among the elements ha ...
ELECTRON GROUPS IN STABLE KERNELS. He 2 Ne 2-8 A 2-8-8 Ni/3 2-8-18 Kr 2-8-18-8 Pd/3 2-8-18-18 Xe 2-8-18-18-8 Er/3 2-8-18-32-8 Pt ...
PERIODIC CLASSIFICATION OP THE ELEMENTS. 11 multiple of the charge of the proton. Speculations regarding the structure of the nu ...
12 THE ELEMENTS. number into the various levels. To take a concrete example: Xenon has an atomic number of 54, that is, the nucl ...
PERIODIC CLASSIFICATION OF THE ELEMENTS. 13 These electrons held in common occupy a position between the "kernels" of the two at ...
(^14) THE ELEMENTS. subordinate periods which are spaced from the elements Ni, Pd, Er, Pt, in the same way that the two short pe ...
LEAD FROM LEAD OXIDE. 15 atmosphere have been isolated, and sulphur is obtained from the associated minerals. In other cases, th ...
16 THE ELEMENTS. Yield 40 to 45 g.; theoretically 46.4 g. This process is used technically for recovering lead from litharge for ...
MANGANESE FROM PYROLUSITE. 17 It is upon this strong tendency of aluminium to oxidize that the processes of aluminothermy are ba ...
18 THE ELEMENTS. nesium powder and in the latter stick a strip of filter paper (10 X 2 cm.) which has been moistened with concen ...
CRYSTALLIZED SILICON. 19 Yield, 30 to 33 g. With smaller amounts of the mixture, a por- celain crucible (which is, however, very ...
20 THE ELEMENTS. " Crystallized Boron."^1 Mix 50 g. of anhydrous boron trioxide, 75 g. of sulphur, and 100 g. of granulated or ...
TIN FROM CASSITERITE. 21 This method, on account of the relatively high cost oi potassium cyanide, is used only in the laborator ...
22 THE ELEMENTS. perature remains constant for from 10 to 20 minutes. In deter- mining this temperature, a supercooling occurs r ...
EXTRACTION OF GOLD. 23 REDUCTION WITH AQUEOUS REDUCING AGENTS. Selenium Dioxide and Pure Selenium from Crude Selenium. From a d ...
24 THE ELEMENTS. in which the gold is chemically united with some other element, are treated either with chlorine water, whereby ...
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