This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...above mentioned. The quantity of gas absorbed by each of these materials is determined by filling the tubes, as above mentioned, with the dried material. The content of each tube is previously determined by filling with mercury and weighing. Having determined the weight of the substance after the ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ...above mentioned. The quantity of gas absorbed by each of these materials is determined by filling the tubes, as above mentioned, with the dried material. The content of each tube is previously determined by filling with mercury and weighing. Having determined the weight of the substance after the expulsion or calculation of the volume of the air contained within its pores, it is treated with the gas in the apparatus described above and weighed from time to time until no further increase of weight takes place. The method of calculating the results is shown in the following scheme: Let P' = weight of the empty tube filled with air at 100. V = content of the absorption tube. pl = weight of the air in the tube (pi = V X specific gravity of the air at 100). pt' = weight of the tube (pf = P'--pl). P3 (second weighing) = weight of the tube filled with the substance with the included air at 100. V3 = volume of the'substance calculated according to the formula F--F s!--specific gravity of the air' s' = specific gravity of the substance. vl = volume of the air in the flask filled with the substance (vl = V--v3). GENERAL METHOD OF DETERMINING ABSORPTION 319 pi' (weight of this included air) = vl X specific gravity. ps--weight of the substance (ps = pz--pt'--pl). P3 = weight of the apparatus at the end of the experiment. sg = specific gravity of the gas employed for saturation. pg (weight of the gas remaining over the substance) = vl Xsg. pa (weight of the absorbed gas)= P3--pt'--ps--pg. Then if p-gram of substance absorbs pa gram of the gas, 100 grams of substance would absorb;---grams. The specific gravities of the gases employed are calculated from the tables given by L, andolt and Bornstein in "Physical and Chemical Tables," page 5. The specific...
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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