The 50-mL titrette has a tolerance limit of ± 0.030 mL. What do the Titrette calculations indica about your technique? Support your answer using the calculated statistics. When measuring 40 mL, the micropipette has a tolerance limit of ± 0.8 mL. What do the micropipette calculations indicate about your technique? Support your answer using the calculated statistics.

The 50-mL titrette has a tolerance limit of ± 0.030 mL. What do the Titrette calculations indica about your technique? Support your answer using the calculated statistics. When measuring 40 mL, the micropipette has a tolerance limit of ± 0.8 mL. What do the micropipette calculations indicate about your technique? Support your answer using the calculated statistics.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter1: Introduction

Section: Chapter Questions

Problem 1.10QAP

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4. A fat sample with combination of acids contain standard hydrochloric acid for blank and sample with 8mL and 5mL respectively. The normality of the standard hydrochloric acid is 0.93N and the weight of the sample is 3 grams. Calculate the saponification value.
Is this calculation correct? See image below....
Table 2: Absorbance Values of Standards and Unknowns. Sample Blank Standard Solution 1 Standard Solution 2 Standard Solution 3 Standard Solution 4 Standard Solution 5 Water Sample 1 Water Sample 2 Phosphate Concentration (in ppm) Y17 0 ppm 0.02 ppm 0.04 ppm 0.08 ppm 0.16 ppm 0.32 ppm Freeman Lake 0.001 0.325 0.292 0.413 0.315 0.039 0.054 0.049 Absorbance at 2= 690 nm Calculations: 1. Construct a phosphate standard curve in Excel by plotting concentration (in ppm) on your x-axis and Absorbance (unitless) on your y-axis for your known solutions. Label the axes on the graph and provide the curve with a title. Use a linear trendline to generate a best fit line to your data. Label the graph with the equation and the R" value. Insert your labeled graph in the space below. X
A solution of Ba (OH), was standardized against 0.1208 g of primary-standard-grade benzoic acid, C6H5 COOH (122.12 g/mol). An end point was observed after addition of 43.94 mL of base. a. Calculate the molar concentration of the base. Concentration M b. Calculate the standard deviation of the molar concentration if the standard deviation for the mass measurement was ±0.4 mg and that for the volume measurement was +0.02 mL. Standard deviation M c. Assuming an error of -0.3 mg in the mass measurement, calculate the absolute and relative systematic error in the molar concentration. Absolute systematic error = M Relative systematic error = |ppt
How do you find the standard deviation with these calculations?
Method of Standard Addition Worksheet You are provided a stock standard solution containing : 0.0500 g/250 mL acetaminophin (APAP). You need to determine how much standard stock is required to prepare the following solutions using 100 mL flasks. Flask 12 3 4 [APAP] added ppm (mg/L) t 10 20 30 40 RI mL Stock 0.1 What method of calibration do you use if you are analyzing a product and the product contains no ingredients that interfere with the instrument response for APAP in the product? on th LI What method of analysis do you use if you are analyzing a product and the product contains ingredients that interfere with the instrument response for APAP in the product? or
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PART ONE: Preparation of FECNS* Solution Prepare the two solutions in table 1 by accurately measuring the required volumes of distilled water and CNS into two labeled test tubes. The absorbance of the solutions must be measured soon after adding the Fe" solution from a buret. TABLE 1 Fe 5 ml 5S mL Solution Distilled Water CNS 2 mL Total Volume 3 ml 2 ml 10 ml 3 mL 10 ml In this part of the experiment you are to explore what the above quote means. As a PRELIMINARY Exercise, formulate a hypothesis as to what would happen under each of the following circumstances: 1. 1ml of 0.0020 M CNS' solution is added to the unused portion of solution 1 in the test tube 2. One drop of 0.20 M CNS solution is added to the unused portion of solution 2 in the test tube.
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For EACH type of gravimetric analysis:Give actual applications of each analysis. Include the SPECIFIC methodology for each sample chosen.
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I need help to calculate this data please thanks a lot