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Updated: May 9, 2025
A second liquid is formed by dissolving 60 grams of cyanide of potassium in 80 grams of distilled waters; the two liquids are mixed together in a decanter and stirred for 20 minutes, and then filtered.
What weight in grams of impure ferrous ammonium sulphate should be taken for analysis so that the number of centigrams of BaSO obtained will represent five times the percentage of sulphur in the sample? !Answer!: 0.6870 gram.
In the analysis of a sample of steel weighing 1.881 grams the phosphorus was precipitated with ammonium molybdate and the yellow precipitate was dissolved, reduced and titrated with KMnO . If the sample contained 0.025 per cent P and 6.01 cc. of KMnO were used, to what oxide was the molybdenum reduced? 1 cc. KMnO = 0.007188 gram Na C O . !Answer!: Mo O . !Answer!: 0.009385 gram.
Boil until the deep blue is displaced by a light bluish green coloration, or until brown stains form on the sides of the flask. Add a solution containing about 3 grams of potassium iodide, as in the standardization, and titrate with thiosulphate solution until the yellow of the liberated iodine is nearly discharged.
!Answers!: Acid; 1.86 cc. alkali. In preparing an alkaline solution for use in volumetric work, an analyst, because of shortage of chemicals, mixed exactly 46.32 grams of pure KOH and 27.64 grams of pure NaOH, and after dissolving in water, diluted the solution to exactly one liter. How many cubic centimeters of 1.022 N hydrochloric acid are necessary to neutralize 50 cc. of the basic solution?
"Perhaps they should be put out of reach of poverty," later felt he "had caused death of wife and son on account of his expensive living." Autopsy: chronic internal hydrocephalus, cerebral arteriosclerosis. Brain weight 1180 grams. Coronary sclerosis with calcification throughout, aortic and pulmonary valvular calcification hypertrophy of heart. Cystitis.
Tare it accurately; pour water into the flask until the weight of the latter counterbalances weights on the opposite pan which equal in grams the number of cubic centimeters of water which the flask is to contain. The mark may be etched upon the flask by hydrofluoric acid, or by the use of an etching ink now commonly sold on the market.
Admirable walk to Chateauneuf, a place of sojourn for rheumatic patients, where everybody is lame. Nothing can be queerer than this population of cripples! "August 3d. Nothing. The treatment. "August 4th. Ditto. Ditto. "August 5th. Ditto. Ditto. "August 6th. Despair! I have just weighed myself. I have gained 310 grams. But then? "August 7th.
The next morning we each received three-quarters of a pint of acorn coffee, so called, horrible-tasting stuff; and a loaf of black bread half potatoes and half rye weighing two hundred and fifty grams, or a little more than half a pound, among five men. This allowed a piece about three by three by four inches to each man for the day's ration.
Add weights corresponding in grams to the volume desired, and add distilled water to counterbalance these weights. An excess of water, or water adhering to the neck of the flask, may be removed by means of a strip of clean filter paper. Stopper the flask, place it in a bath at 15.5°C. or 17.5°C. and, after an hour, mark the location of the lowest point of the meniscus, as described above.
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