Collections: 
0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Image 533 of Annual report. 1915

Part of Kentucky Agricultural Experiment Station

item | thumbnails | details | text | pdf
it ll V 64 Circular N0. 9. ‘ _· l V. V corresponds to the percentage of calcium carbonate inthe ` . V limestone. 5 p » — if V ~ The cylinder "K" was graduated to read per cent by .. ' ._ i T treating one gram of chemically pure calcium carbonate as l ... - just described to find the position of the 100 per cent mark. A . T The position of the 50 per cent mark was determined in the ‘ j same way. by using é gram, and the space between the100 `_ per cent mark and the 50 per cent mark was divided into 50 _ equal parts. _ , · . V Fifteen different samples of limestones which had been ` previously analyzed by a more exact quantitative method . · were run with the apparatus described above. The follow- ` ing table shows the results obtained by the two methods: _ . Lab. No. N0. 1 No. 2 Variation ·' ` * ` A — CaCO:; _CaCOs L 7 50422 98.61 per cent 98.80 per cent . + 0.18 per cent l 50423 _ 89.50 " 89.80. V " —l» 0.30 " . 50429 82.00 " 80.50 " — 1.50 " V i 50430 77.62 " 76 50 " -— 1.12 " ,' 50431 67.87 " 66.50 " ~— 1.37 "` L . ` 50432 87.25 " 86.50 ' " — .75 _" » V 50433 95.87 " 96.00 " + .13 " C 50434 99.00 " 99.00_ " .00 " .— 50435 96.62 " 96,50 " V —— .12 " . 50436 97. 50 " 96.00 " — 1.50 " 50445 59.29 " 61.00 ‘_‘ »l— 1.71 " V . 50447 86 25 *‘ 84.25 " — 2.00 " 50450 100.25 " 99.90 " — 1.25 " 50451 _ 94 25 " 93.50 " — 0.75 " - 50452 98.00 " I 97.00 " V -— 1.00 " Average U- 88.65 per cent 88.06 per cent · _ The results in column N0. 1 were obtained by Mr. Pfanstiel of this laboratory by quantitative chemical analyses. The results in column No. 2 were run by the ‘ V apparatus as described in this circular. _ . Comparing the results in columns No. 1 and No. 2, we find . · 4 variations from 0 to 2 per cent on a single determination in each case. The average of column No. 1 is 88.65 per cent ' and column No. 2 is 88.06 per cent, which shows fairly close ( ~ average agreement. 1 The volume of water displaced by the carbon dioxid will vary somewhat, depending on changes in temperature and ‘

Hosted by the University of Kentucky

Contact us: kdl-help@kdl.kyvl.org

Contributors: