Lab Data/Calculations identity of Unknown Mass (g) of Unknown and weighing paper Mass (g) of weighing paper following transfer Mass (g) of Unknown A used Initial mass (g) of Mg used (approximate) Mass (g) of filter paper (before use) Mass (g) of dried fiter paper and isolated Cu O Show Transcribed Text aitial mass (g) of Mg used (approximate) Mass (g) of filter paper (before use) Mass (g) of dried filter paper and isolated Cu Mass (g) of recovered Cu metal by weight of Cu in Unknown A G A Edit Answer 3.35 Edit 2.25 Edit Try 1: X 10972 Try 2/11 55 Info 1040 0.48 Edit 0.32 Edit 0.42 Edi 0.48 Edit 0.32 Edit 0.42 Edit Try 1:01 55 Info 100 Try 1: X 20.83 Try 2: √9091 55 Info 100 NG 3

Lab Data/Calculations identity of Unknown Mass (g) of Unknown and weighing paper Mass (g) of weighing paper following transfer Mass (g) of Unknown A used Initial mass (g) of Mg used (approximate) Mass (g) of filter paper (before use) Mass (g) of dried fiter paper and isolated Cu O Show Transcribed Text aitial mass (g) of Mg used (approximate) Mass (g) of filter paper (before use) Mass (g) of dried filter paper and isolated Cu Mass (g) of recovered Cu metal by weight of Cu in Unknown A G A Edit Answer 3.35 Edit 2.25 Edit Try 1: X 10972 Try 2/11 55 Info 1040 0.48 Edit 0.32 Edit 0.42 Edi 0.48 Edit 0.32 Edit 0.42 Edit Try 1:01 55 Info 100 Try 1: X 20.83 Try 2: √9091 55 Info 100 NG 3

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter8: Sampling, Standardization, And Calibration

Section: Chapter Questions

Problem 8.12QAP

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Categorize each as a determinate or an indeterminate error and further classify determinate errors as instrumental, method or personal.d) The tip of the pipet used in the analysis is broken. e) In measuring the same peak heights of a chromatogram, two technician each report different heights.
50 Percentage Red No. 40 Soln 100% 80% 60% 40% Table 4.1: Dilutions of Red No. 40 & Absorbance Volume of Red No. 40 Soln (mL) 10me 8mL опи 4mL Percentage Red No. 40 Soln 100% 80% 60% 40% 20% Volume of DI Water (mL) OML 2mL LIML M UML 8ML Table 4.2: Dilutions of Red No. 40 & Absorbance Concentration Red No. 40 2. Report the wavelength with the maximum absorbance of Red No. 40 dye. Absorbance 20% 2ML Part A: Making a Calibration Curve for Beer's Law 1. Calculate the concentrations of each of your diluted Red No. 40 solutions and add these to Table 4.2. Show at least one sample calculation in the space below. 0.251 0.192 Total Volume 0.181 0·119 0.060 (mL) 10 mL 10 mL 10 mL 10 mL 10 mL
Mass of sample Mass of filter paper + AgCl Mass of filter paper Mass of AgCl Mass of Cl in original sample (show calculations) Percent chloride in original sample (show calculations) Extcon bre Gravimetric Analysis of a Chloride Salt Standard deviation (show calculations) 17 Relative standard deviation expressed as a percent (show calculations) Trial 1 0.38438 1-259 0.539 Average percent chloride (show calculations) 0.719 Trial 2 0.3155 g 1.229 0.52g 0.79 11 Trial B Do any of your results differ from the mean by more than two standard deviations? Reported percent chloride ± % 09 EV 40
The reproducibility of replicate measurements may be expressed by: 1. ORelative error 2. OAbsolute error 3. ОАсcuracy 4. Ovariance
Grain sample was found to contain 6.6% moisture. A 5.3000 g as received sample was placed ina crucible (29.5033g tare) . The ashed crucible weighed 30.0055 g.Calculate % ash on a) as received basis b) dry basis
Sample IdentificationCodeConcentration of M%TA=2-log(%T)Q50004.00 x 10-417.90.75Q50013.20 x 10-425.00.6Q50022.40 x 10-435.70.46Q50031.60 x 10-450.20.3Q50048.000 x 10-570.80.15SampleIdentificationCode%TA=2-log(%T)AMQ0210150143.70.359518560.360.000192Q0210150244.10.355561410.360.00018Q0210150343.80.358525890.360.00017Q0210150444.10.355561410.360.00018Q0210150543.80.358525890.360.00017What was their percent error?43%Does Batch 021015 meet legal requirements?No, because it is not between 2.85 * 10(4) and 3.15 * 10(4)Well #DropsBluedye1234567891012345678910Drops 9Distilled water876543210Concne 0.26tration0.52Test Tube #0.781.041.3Solutions3Concentration (M)2.082.32.6Concentration (ppm)1:1 dilution11.82Starting Dilution21.562:1 dilution0A.Zero standard0Was your calibration curve as linear as you expected?B.Did you experience any â€œdriftâ€ of the resistance readings?C.What is the equation of your best-fit line?D.What commercial drink did you analyze?E.Assuming…
M9. Readings X * OWLV2 | Assig X * MindTap - Cen X MindTap - Cen X G amu of ca - Go X b My Questions engage.com/static/nb/ui/evo/index.html?elSBN=9781337790840&id%3D299783426&snapshotld%3D785765& C << CENGAGE MINDTAP Q Search this cour Chapter 8: Chemical Composition ž AA A Answer + 47. Calculate the percent by mass of the element listed first in the formulas for each of the following compounds. a. methane, CH4 b. sodium nitrate, NaNO3 c. carbon monoxide, CO d. nitrogen dioxide, NO2 e. 1-octanol, Cg H18 O f. calcium phosphate, Caz (PO4)2 g. 3-phenylphenol, C12 H10O h. aluminum acetate, Al(C,H,02), 48. Calculate the norgont h !!
Can you please fill the rest of tghe data based on the on inforamtion you have and answer Average percent by mass of acetic acid in vinegar sample (%) ________________ Standard deviation of percent by mass of acetic acid in vinegar sample (%)
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I got a task in analytical chemistry to calibrate, standardize, verify and validate an analytical balances, can you help me?
Categorize each as a determinate or an indeterminate error and further classify determinate errors as instrumental, method or personal. a) An unknown sample being weighed is hygroscopic. b) One component of a mixture being analyzed quantitatively by GC reacts with the column packing. c) A radioactive sample being counted repeatedly without any change in condition yields a slightly different count at each trial. d) The tip of the pipet used in the analysis is broken. e) In measuring the same peak heights of a chromatogram, two technician each report different heights.
Equation for Standard Curve of the concentration of CuSO4 is A815= 0.0101[CuSO4]-0.0017, R2=0.9994. what is the concentration in molarity of the unknown CuSO4 concentration and include standard deviation for the data below. Serial dilution were preformed. absorbance from stand curve is 815 Dilution Ratio Absorbance (nm) 1:2 1.7412 1:4 0.8569 1:8 0.4167 1:16 0.1958