- Industry: Printing & publishing
- Number of terms: 178089
- Number of blossaries: 0
- Company Profile:
McGraw Hill Financial, Inc. is an American publicly traded corporation headquartered in Rockefeller Center in New York City. Its primary areas of business are financial, publishing, and business services.
The constant a in the Beer’s law relation A _ abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.
Industry:Chemistry
Determination of the average size of fine particles in a fluid (gas or liquid) by passing the mixture through a powder bed of known dimensions and recording the pressure drop and flow rate through the bed.
Industry:Chemistry
A method in which a sample and a reference are individually heated (by separately controlled resistance heaters, at a predetermined rate), and enthalpic (heat-generating or -absorbing) processes are detected as differences in electrical energy supplied to either the sample or the reference material to maintain this heating rate. This difference in electrical energy, in milliwatts per second, of the heat flow into or out of the sample is due to the occurrence of a physical or chemical process.
Industry:Chemistry
A measure of free hydroxyl groups in fats or oils determined by the amount of potassium hydroxide used to neutralize the acetic acid formed by saponification of acetylated fat or oil.
Industry:Chemistry
Measure of millimoles of peroxide (or milliequivalents of oxygen) taken up by 1000 grams of fat or oil; used to measure rancidity. Also known as peroxide value.
Industry:Chemistry
Thermometric titration in which titrant is added simultaneously to the reaction mixture and to a blank in identically equipped cells.
Industry:Chemistry
A substance that reveals, through characteristic color changes, the degree of acidity or basicity of solutions.
Industry:Chemistry
In chromatography, the ratio of the volume of the mobile phase to that of the stationary phase in a chromatographic column.
Industry:Chemistry
In polarography with a dropping-mercury electrode, the flow that is controled by the rate of diffusion of the active solution species across the concentration gradient produced by the removal of ions or molecule at the electrode surface.
Industry:Chemistry
A titration in which an acid of known concentration is added to a solution of base of unknown concentration, or the converse.
Industry:Chemistry
