how are saponification value determined?
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Saponification value is a measure of the content of ester linkages. It is determined by back titration of potassium oxide in the presence of phenolphthalein indicator with 0.5 N sulfuric or hydrochloric acid. ... Phenolphthalein solution is then added and sample titrated with 1 N HCl.
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When you add or subtract, you assign significant figures in the answer based on the number of decimal places in each original measurement. When you multiply or divide, you assign significant figures in the answer based on the smallest number of significant figures from your original set of measurements.
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accuracy = (tp+tn)/N; sensitivity = tp_rate; specificity = tn_rate; precision = tp/(tp+fp);
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And you calculate how many CPU required based on the SAPS sizing guide provided. SAPS calculation varies from hardware vendor to hardware vendor. It varies from 1500-2000 SAPS per CPU.
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Winning Points: point values are based on serving sizes, number of calories, grams of fat, and grams of fiber. The Shakeology point value is 2 points. PointsPlus: each point value is based on the food's protein, carbs, fat, and fiber content. The Shakeology point value is 3 points.
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Water content is determined by the Karl Fischer titration method and it consists of only water i.e moisture content. ... Loss on drying (LOD) is determined by heating the sample below its melting point in an oven and it includes all volatile matter including water content and solvents.
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['light intensity.', 'carbon dioxide concentration.', 'temperature.']
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['dividing the amount of a nutrient in a serving size by its daily value, then.', 'multiplying that number by 100.']
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It is calculated from the ratio of carbon dioxide produced by the body to oxygen consumed by the body. The Respiratory Quotient value indicates which macronutrients are being metabolized, as different energy pathways are used for fats, carbohydrates, and proteins. ... therefore, RQ =1 for glucose.
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['Each test uses up a piece of paper to determine a single pH value. ... ', 'Litmus paper uses a qualitative value (color) to give a general idea of pH value. ... ', 'Litmus paper contains chemicals which may leach into the sample.']
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To create a more manageable number, chemists define the pKa value as the negative logarithm of the Ka value: pKa = -log Ka. If you already know the pKa value for an acid and you need the Ka value, you find it by taking the antilog. In practice, this means raising both sides of the equality to exponents of 10.
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[' State the Research Hypothesis.', ' State the Null Hypothesis.', ' Select a probability of error level (alpha level)', ' Select and compute the test for statistical significance.', ' Interpret the results.']
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You can identify an unknown substance by measuring its density and comparing your result to a list of known densities. Density = mass/volume. Assume that you have to identify an unknown metal. You can determine the mass of the metal on a scale.
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TOTAL SOLUBLE SOLID (TSS) -Measure the sugar content of sugar solutions (honey, juices,syrup) which the sugar is the major component using refractometer -Total soluble solids content of a solution is determined by the index of refraction. ... -This tests the solids concentration of a sucrose containing solution.
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Saponification is a process by which triglycerides are reacted with sodium or potassium hydroxide (lye) to produce glycerol and a fatty acid salt called "soap." The triglycerides are most often animal fats or vegetable oils.
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Our SmartPoints system assigns every food and drink a point value - one simple, easy-to-use number based on calories, saturated fat, sugar, and protein. Foods that are higher in sugar and/or saturated fat are higher in SmartPoints values, and foods that are higher in lean protein are lower in SmartPoints values.
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Selectivity is usually measured by the separation factor (the ratio of the retention factors for any two peaks in the chromatogram). ... So long as mixtures are not too challenging, success seems almost guaranteed because of the high kinetic performance of the columns in gas chromatography.