Analytical ChemistryXerox College Pub., 1971 - 508 pagine |
Dall'interno del libro
Risultati 1-3 di 11
Pagina 415
... standard deviation of the one - minute counts . Compare the two standard deviations . Is it worthwhile to do . the longer count ? Calculate the optimum ratio of background counting time to sample counting time . ( c ) Compare the counts ...
... standard deviation of the one - minute counts . Compare the two standard deviations . Is it worthwhile to do . the longer count ? Calculate the optimum ratio of background counting time to sample counting time . ( c ) Compare the counts ...
Pagina 458
... standard deviation is a better measure of precision than the average deviation , because it gives more weight to large deviations . When N is large and the frequency of deviation follows a normal distribution curve , then the average ...
... standard deviation is a better measure of precision than the average deviation , because it gives more weight to large deviations . When N is large and the frequency of deviation follows a normal distribution curve , then the average ...
Pagina 459
... standard deviation by a factor of 10 requires 100 times as many observations . The practical limit of useful replication is reached when the standard deviation of the random errors is comparable to the magnitude of the determinate or ...
... standard deviation by a factor of 10 requires 100 times as many observations . The practical limit of useful replication is reached when the standard deviation of the random errors is comparable to the magnitude of the determinate or ...
Sommario
Introduction | 3 |
Basic Tools of Analytical Chemistry | 15 |
Experiment | 16 |
Copyright | |
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absorbance absorption acetic acid solution activity activity coefficient added agent alkaline amount analysis analytical anion atomic beaker beta particles blood buffer buret calcium Calculate calibration carbon cathode cell chelate chloride chromatography color column complex compounds concentration constant containing coulometric crucible decrease detector determined dilute dissolved distilled water EDTA electrode electrolyte eluted end point enzyme Equation equivalence point Erlenmeyer flask error example extraction Figure filter flame flask glass glucose half-reaction hydrochloric acid hydrogen hydroxide indicator instrument iodide ion-selective electrodes ionization measured mercury metal mixture mmoles molecule NaOH Nernst equation nitrogen oxidizing oxidizing agent particles percent perchloric acid pipet potassium potential precipitate prepared procedure protein reaction reagent redox reduced salt sample separation serum sodium soluble solvent substance sulfuric sulfuric acid temperature titration titration curve tube unknown volume volumetric volumetric flask wavelength weight zero