Review of American Chemical Research, Volumen8Chemical Publishing Company, 1902 |
Otras ediciones - Ver todas
Términos y frases comunes
A. A. NOYES acetic acetic acid action Age of Steel alcohol alkali alloys aluminum ammonia ammonium amount analyses Anilin Assignor beds benzene boiling calcium calcium carbide carbon cement cent Chem chemical CHEMISTRY chloride coal coke color compound concentrated containing copper crystals cyanide decomposed deposits dilute dissolved electric electrolyte ether ethyl Expt extract F. P. UNDERHILL Fabrik feet filter furnace Geol Germany gold H. W. LAWSON heating hydrochloric acid hydrogen hydroxide insoluble iron J. W. RICHARDS KINNICUTT lime liquid Ludwigshafen magnesium melting metal method mineral Mining mixed mixture molecule nickel nitrate nitrogen obtained oxide oxygen phosphorus Physiol plant potassium pounds powder precipitate reduced rock S. P. SADTLER salt septic tank sewage silica silver soda sodium sodium carbonate sodium chloride soil soluble soluble in water solution steel substance sugar sulphate sulphide sulphuric acid temperature tion tons treated W. F. HILLEBRAND zinc
Pasajes populares
Página 292 - ... water. The filtrate is again evaporated to dryness, the residue without further heating, taken up with acid and water and the small amount of silica it contains separated on another filter paper. The papers containing the residue are transferred wet to a weighed platinum crucible, dried...
Página 287 - ... 2. — Large and permanent placers are. to be looked for only in very old land areas which have been subjected to protracted degradation and concentration.
Página 208 - This new and simple test is based upon the following facts : (1) Albumin is coagulated by carbolic acid ; (2) Equal volumes of non-albuminous urine and a mixture, composed of equal parts of carbolic acid and glycerin, form an emulsion which clears up entirely upon agitation, leaving a perfectly transparent and highly refractive liquid ; (3) Equal volumes of albuminous urine and the above mentioned carbol-glycerin solution, when mixed together, produce a white turbidity, which remains, in spite of...
Página 538 - ... fine gravel, coarse sand, medium sand, fine sand, very fine sand, silt, and clay.
Página 293 - The precipitate and filter are placed wet in a platinum crucible, and the paper burned off over a small flame of a Bunsen burner.
Página 292 - ... separated on another filter paper. The papers containing the residue are transferred wet to a weighed platinum crucible, dried, ignited, first over a Bunsen burner until the carbon of the filter is completely consumed, and finally over the blast for 15 minutes and checked by a further blasting for 10 minutes or to constant weight.
Página 291 - ... minutes, or longer if the blast is not powerful enough to effect complete conversion to a cement in this time. It is then transferred to an evaporating dish, preferably of platinum for the sake of celerity in evaporation, moistened with enough water...
Página 292 - NH4OH, boiled and the second precipitate collected and washed on the same filter used in the first instance. The filter paper, with the precipitate, is then placed in a weighed platinum crucible, the paper burned off and the precipitate ignited and finally blasted 5 minutes, with care to prevent reduction, cooled and weighed as A12O3 + Fe2O3.2 Iron (Fe20s).
Página 291 - HC1 added and digested with the aid of gentle heat and agitation until solution is complete. Solution may be aided by light pressure with the flattened end of a glass...
Página 281 - The scheme of classification presented below is based primarily upon the amount of chemical change caused by the processes of manufacture and use; and secondarily upon the chemical composition of the cement after setting. Though not perfect it is believed to be more consistent and complete than any hitherto used.