New PDF release: Chemistry of the Rarer Elements

By B. S Hopkins

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The cost would be prohibitive. But the U. S. Bureau of Mines recalled the presence of helium in the so-called " wind gas " of Kansas as reported by Cady and McFarland. The need was urgent, and without time for suitable preliminary experiments the government erected plants for the recovery of helium from the natural gas of Texas and vicinity. The effort was successful, and at the signing of the armistice 150,000 cubic feet of helium, enough for three or four observation balloons, were ready to be shipped abroad.

Most ifttftortniit «*xc««|)ti(iim tn^itiM the carlx>nate, phosphates, and fluoride*. Tin? si nitrl in (ttw #>f tin* numt deliquescent HHUH known. It hm a nUttrp mditu*. UIHU* ; in nt>ln\pU* m wnirr, ethyl alcohol, arnyl alcohol, ether, chloroform, stnd pyridinf*. ) When an aqucoun woluiion of LiCl in ttvafximted tn drv««'>«» mntill amounts of HCl and Li/) am forniml in a mnniwr ntronnly mt%wMivt* #if the behavior of MgCl*. It m UMCK! in the rnariufiiettint of lahm wt%U*t* JIIHI in pyrotechnics.

Mag. 40 672. «Jour. Ind. and Eng. Chem. 12 821 (1920). 6 Williams and Ferguson, Jour. Am. Chem. Soc. 44 2160 (1922). 7 Burt, Trans. Faraday Soc. 6 19 (1910). 8 Proc. K. Akad. Wetmsch. Amsterdam 10 445, 741 (1907). HELIUM 27 stances. It was the last of the so-called permanent gases to yield to the efforts to produce a liquid. The classical work of Kammerlingh Onnes l used 300 liters of helium gas, which was cooled first by liquid air, then by liquid hydrogen boiling under diminished pressure, and finally by passing through a special Hampson liquefier.

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Chemistry of the Rarer Elements by B. S Hopkins


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