Gram-atomic weight

Corrosion Rate by CBD Somewhat similarly to the Tafel extrapolation method, the corrosion rate is found by intersecting the extrapolation of the linear poi tion of the second cathodic curve with the equihbrium stable corrosion potential. The intersection corrosion current is converted to a corrosion rate (mils penetration per year [mpy], 0.001 in/y) by use of a conversion factor (based upon Faraday s law, the electrochemical equivalent of the metal, its valence and gram atomic weight). For 13 alloys, this conversion factor ranges from 0.42 for nickel to 0.67 for Hastelloy B or C. For a qmck determination, 0.5 is used for most Fe, Cr, Ni, Mo, and Co alloy studies. Generally, the accuracy of the corrosion rate calculation is dependent upon the degree of linearity of the second cathodic curve when it is less than... 

It is evident from the above equation that each gram-atomic weight of iodine in thyroid is converted to 1 mol of iodate and finally to 3 mol or 6 equivalent of iodine. Therefore, the equivalent weight of the iodine present in the dried thyroid gland is 21.15 g (i.e., 1/6 x 127 At. wt. of I2). Hence, each millilitre of 0.01 N sodium thiosulphate is equivalent to 0.0002115 g of iodine (i.e., 0.01 x 0.02115 g). 

ATOMIC HEAT. The product of the gram-atomic weight of an element and its specific heat The result is the atomic heat capacity per gram-atom. For many solid elements, the atomic heal capacity is very nearly the same, especially at higher temperatures and is approximately equal to 3R, where R is the gas constant (Law of Dulong and Petit). 

GRAM-EQUIVALENT. The gram-atomic weight of an element (or formula weight of a radical) divided by its valence. In the case of multivalent substances (here will be more than one value for the gram-equivalent. viz... Feill> = 27.92 grams, Fe(III) = 18.61 grams, and the proper value for Ihe particular reaction must be chosen. 

The atomic weight of zinc is therefore 4.09 X 16 = 65.4 if our assumption of the 1 1 ratio is correct. Therefore 65.4 grams of zinc is the gram atomic weight of this element, and it likewise contains 6.06 X 1023 actual atoms. 

Avogadro s Number. The actual number of molecules of a gas in 22.4 liters under standard conditions has been determined by several different methods. The results agree very well, and the value generally accepted is 6.06 X 1023. This quantity has been named Avogadro s number in honor of the man who first suggested the principle on which it depends. It is the number of molecules in a mole of any substance, whether gas, liquid, or solid. It is also the number of atoms in a gram atomic weight of an element. 

F/Zr where F and Zr are gram atomic weights of fluorine and zirconium, respectively -1... 

White, Friedman, and Johnston (343) have measured the critical constants for normal hydrogen and have found 33.244 K. and 12.797 atmospheres. Woolley, Scott, and Brickwedde have presented data on the dissociation energy and the thermodynamic properties for the ideal diatomic gas, including contributions from nuclear spin. We have omitted the spin entropy in compiling our tables. Thermodynamic properties for the ideal monatomic gas have been computed at the National Bureau of Standards (395). Note that the reference state represents 2 gram atomic weights for this element. 

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