A REVISION OF THE ATOMIC WEIGHT OF 



CHROMIUM. 



THE ANALYSIS OF SILVER CHROMATE. 



INTRODUCTION. 



The following table * gives the results of investigations upon the atomic 

 weight of chromium from the time of Berzelius, recalculated with the use of 

 recent atomic weight ratios upon the basis of silver (107.88) and oxygen 

 (16.000) .2 



• Clarke," A Recalculation of the Atomic Weights," Smith. Misc. Coll., 1910. 



' The following atomic weights are used in the calculation of the older values: Ag = 

 107.88; CI = 35.46; Pb = 207.09; N = 14.01; Ba = 137-37; S = 32.07; H = 1.008; K 

 = 39.10; As = 74.96; I = 126.92. The values of Rawson and Meineke are reduced to the 

 vacuum standard; the others are not so corrected. 



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