An Advanced Course in Quantitative Analysis With Explanatory Notes
The book An Advanced Course in Quantitative Analysis With Explanatory Notes was written by author Henry Fay Here you can read free online of An Advanced Course in Quantitative Analysis With Explanatory Notes book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Advanced Course in Quantitative Analysis With Explanatory Notes a good or bad book?
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The results give PROXIMATE ANALYSIS OF COAL 49 important data as to the commercial value, and may be obtained in very much shorter time than the results of an ultimate analysis. 2. The sampling of coal, whether at the mine or at the place of destination, is a very important matter, and the subject is too extensive to be dealt with here. The student should read on this subject the papers referred to on page 47. 3. The loss of weight at 105 includes not only that moisture which is adsorbed on the... surface, but also some of the water which is an essential part of the coal itself. Samples may have been taken from a wet face of the mine or from a car which had been standing in the rain or snow, and the amount of this moisture varies with the weather conditions. It is, therefore, desirable to establish nearly normal conditions by air-drying the sample. Coal exposed to circulating air at ordinary tem- peratures will either give up or take on moisture depending upon the fineness of the sample and the humidity of the air.
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