Q: What are the requirements of a primary standard?
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Q: - the AH value
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Q: 4. The best answer to report for 352.94 - 36.0342 is. (can you explain where the decimal for…
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A: A mass spectrum is an important tool for the determination of the mass of a compound. A mass…
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Q: Why chromatography is an important tool for analysis of organic compounds?
A: Chromatography is the most useful technique for identification or separation of different compounds…
Q: In spectophotometry, what will happen to the %T if the concentration is doubled?
A: Spectrophotometry is a branch of electromagnetic spectroscopy concerned with the measurement of the…
Q: Which matches the data?
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Q: 3. Seven analyses for the phosphorus content of a fertilizer resulted in 16.2, 17.5, 15.4, 15.9,…
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Q: olo Data PbCl2 1.70x10-5 PBCO3 7.40x10-14 PbCrO4 2.00x10-14 PBF2 3.3x10-8 PbI2 9.8×10-9 Pb(IO3)2…
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Q: D X F C E F Figure 1. Paper Chromatogram Pigments X F E Rf Values 0.15 0.32 --
A: C is called TLC plate or Thin Layer Chromatography plate.
Q: The Ka for HIO is 2.0 x 10-11. Calculate the Kb for IO-1.
A: Given, Ka for HIO : 2.0 x 10-11
Q: 13. The presented scheme has flaws. What is/are the flaw/s? CH3 COOH 1. Cl2, FeCa 2. KMNO. CI
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Q: negative ion * a. 03- b. 02- С. 01- d. Ca3- Саз- е. Ca2- f. Cal-
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Q: A titration was carried out to determine the volume of base needed to neutralize an acid. Five runs…
A: The neutralization reaction or the acid-base reaction is often employed as the basis for determining…
Q: 759.3 tar1)(Larmum (0.09206tatm ) (97. 5+ a73.1SK) molk PV 160.0(0.2864) = V= a85.4mL P-759.3 torr…
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Q: Chemistry Briefly describe the differences between the scanning and SIM approaches with reference…
A: Answer - According to the question - (TIC) - A TIC (Total Ion Chromatogram) is a chromatogram…
Q: iven below are the results for the replicate determination of copper in nter 90, 89, 9.L, 81, 109,…
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Q: In analytical chemistry, when and why do we do representative sampling?
A: Representative sample is defined as the small portion of the overall sample to determine the…
Q: A titrimetric method for the determination of calcium in limestone was tested by analysis of an NIST…
A: The confidence interval can be calculated using the following formula:
Q: Give two real life application of chromatography
A: Chromatography is technique used to identify the substance present it the mixture.
Q: f an instrument gives a response of 1240 for a standard containing 8 ppm of a substance, how much if…
A: The given question can be solved by using the unitary method. The assumption that we are taking is-…
Q: Titration of an oxalate sample gave the following percentages: 15.07 % , 15.58 % , and 15.42 % .…
A: The mean is calculated using the below formula,
Q: A 0.32 g soil sample was digested and diluted to 481-mL. The diluted sample was analyzed for Zn by…
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Q: Peak area proportional to mass or concentration of the individual components of the sample injected.…
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Q: 24. In paper chromatography, a rectangular piece of filter paper serves as the 24. A. mobile phase…
A: Paper chromatography was discovered by Synge and Martin in the year 1943. In paper chromatography,…
Q: Peak area proportional to mass or concentration of the individual components of the sample injected.…
A: The area under the peak is a function of that compound's concentration in the sample.
Q: What is the retention factor (Rf) of the most polar and least polar spot present in the standard…
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Q: Calculate initial concentrations added to the test tube. (Fe+3 and SCN-1) 5 mL of 0.002 M Fe(NO3)3,…
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Q: Gas chromatography cannot analyze mixtures due to the sensitivity of the instrument. True…
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Q: magnetic? 4)
A: Paramagnetic material are those materials which have unpaired electrons ( at least one unpair…
Q: Among the requirements for a substance to be a primary standard is low hygroscopicity. A) True False
A: True. Primary Standard should not absorb moisture from air. A substance that absorb or adsorb water…
Q: relative error caused by this deviation for each measu
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Q: 28-31. Supply the missing value. n 1.55 1.65 1.70 1.80 ??? 1.62 Conc. 10% 15% 25% 35% 22% ???…
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Q: what if it became 0.6 A what is the answer
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Q: The protein concentration of a protein isolate was determined using the Bradford assay. Five…
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Q: What is a primary standard?
A: In chemistry, analytical chemists uses primary standards for various analysis procedures. These are…
Q: I'm working on a pre-lab report for chemistry regarding retention factors. The question asks what is…
A: Retention factors are related to chromatography experiment. Retention factor is the ratio of the…
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Q: 1) a)What is affinity chromatography and what is it used for? b) A drug called Bamlanivimab is…
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Q: A Sample Containing 6.00 x10-2 mmol af vesay acd 2.00x102 a cation _excharyge volume of o.02.00 M…
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Q: Calculate the RSD of the data below. 70.24, 70.22 and 70.10
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Q: Real life applications of standardization of NaOH.
A: A KHP sample of known mass can be titrated with the NaOH solution to determine very precisely the…
Why does the test for F- often yield false negatives?
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- 5. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is a. 50.00 mL b. 10.00 mL 6. From the Gaussian (normal) error curve, what is the probability that a result from a population lies between 0 and +1 σ of the mean? What is the probability of a result occurring that is between +1 σ and +2σ of the mean?Which matches the data?Calculate the RSD of the data below. 70.24, 70.22 and 70.10
- Asking for 6 and 7Find the mean sand standard deviation of each sample.A titrimetric method for the determination of calcium in limestone was tested with the analysis of a NIST limestone containing 30.15% CaO. The mean of the four analyzes is 30.26% CaO with a standard deviation of 0.085%. From the data accumulated from many analyzes, s→ϭ=0.094% CaO was found.a) Do the data indicate the presence of systematic error at the 95% confidence level?b) When a value for ϭ is unknown, do the data show a systematic error at the 95% confidence level?
- Can someone please explain the answerHow to find experimental values1) a)What is affinity chromatography and what is it used for? b) A drug called Bamlanivimab is used to treat infections with SARS-CoV-2 (Covid-19).This drug was developed by isolating antibodies from the serum of a patient who recovered from Covid-19.What is possibly on the stationary phase in a column used to isolate antibodies to SARS-CoV-2? How are the antibodies eluted off the column to isolate them for drug development?
- Calculate the sample standard deviation, s, for this set of data: 4.5, 6.7, 4.2, 9.6, 3.4, 8.2 Report your answer to the fourth decimal place.5.00 mL of stock solution is diluted to 25.00 mL, producing solution ALPHA. 10.00 mL of solution ALPHA is diluted to 25.00 mL, resulting in solution BETA. 10.00 mL of solution BETA is then diluted to 25.00 mL, producing solution GAMMA. dilution factor for ALPHA from stock solution = 0.167 dilution factor for BETA from ALPHA solution = 0.0476 part c and d?If the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in tooth enamel in parts per million. Find the 95% confidence interval for Sr in tooth enamel.