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Analytical Chemistry
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Questions (766)
particular substance we are interested in measuring or studying in the sample
1 answer
asked anonymously
60 views
What is the particular substance we are interested in measuring or studying in the sample
1 answer
asked anonymously
55 views
In png contex, write an essay on Fire Assaying Technique for Gold and Silver Identification using APA referencing style
2 answers
asked by
Galmai Simon
38 views
A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first
5 answers
asked by
Lindsay
8,355 views
10.0 mL aliquot of 0.100M Na3AsO4 is titrated with 0.100M HCl.
pKa1=2.25 pKa2=6.77 pKa3=11.60 Sketch the titration graph by
7 answers
asked by
tara
948 views
A solution containing 10-5 M ATP has a transmission %70 at 260 nm in a 1 cm cuvette.
Calculate the absorbance of the solution and
3 answers
asked by
LEO
538 views
How would each of the following affect the Cr(VI) concentration determined in this experiment? Justify the answers with an
2 answers
asked by
Sandy
715 views
A 24-h urine specimen was diluted to 2.000L and buffered to pH 10.0. A 10.00 mL aliquot was titrated with 27.32 mL of 0.003960 M
4 answers
asked by
Anonymous
1,039 views
In the Titration of amino acids Glycine and Lysine
Which data can be obtained with greater accuracy? 1.the pK values from the
4 answers
asked by
maya
1,273 views
a sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar
5 answers
asked by
MELISSA
2,066 views
A chemical engineer determines the mass percent of iron in an ore sample by converting the Fe to Fe^2+ in acid and then
4 answers
asked by
KELLY
1,442 views
A 0.4671g sample containing sodium bicarbonate was titrated with HCL requiring 40.72ml. The acid was standardized by titrating
5 answers
asked by
Fai
3,306 views
A 25.0-mL solution of 0.0660 M EDTA was added to a 33.0-mL sample containing an unknown concentration of V3 . All V3 present
4 answers
asked by
Ashley
3,740 views
Calculate the MnO4- concentration of the diluted sample when the sample is prepared in the following manner: Add 2 drops oxalic
3 answers
asked by
Aiyana
2,402 views
The regression line from a plot of absorbance vs. concentration yields: 𝐴 = 2.31[𝐶] + 0.002. If the absorbance of an
5 answers
asked by
Shiro
1,619 views
You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a
0.2455 g sample of the antacid tablet, you
4 answers
asked by
zee
2,113 views
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.35-g
5 answers
asked by
Anonymous
4,886 views
Standard Addition Question:
Serum containing Na+ gave a signal of 4.27 mV in an atomic emission analysis. Then 5.00 mL of 2.08 M
6 answers
asked by
Phil
3,306 views
Regarding Flame Tests,
why do you have to subject the sample to a flame? Which part of the Bunsen Burner is hottest? Why is it
4 answers
asked by
Chu
2,752 views
You are given a solution that contains one of the ions Ag+, Pb2+ or Ba2+. Develop a procedure to determine which ion is present.
4 answers
asked by
IRA
2,994 views
A solution was prepared by dissolving 3.5 grams of EDTA (Na2H2Y·2H2O) in exactly 1L of water. This solution was then
4 answers
asked by
A
1,236 views
The equation for a normal calibration curve for the detection of
iron(II) is determined experimentally to be 𝐴 = 12.93
4 answers
asked by
Rafaela
1,362 views
what is the experimental percent of sulfate in alum?
5 answers
asked by
kelly
1,505 views
Is it possible to distinguish two spots that have the same Rf value but represent different compounds? Give two different
4 answers
asked by
Hugh
2,882 views
Aluminum can be determined gravimetrically by precipitating as Al(OH)3 and isolating as Al2O3. A sample containing approximately
4 answers
asked by
anonymous
2,756 views
A 0.1028 g impure sample consists of Na2CO3 was analyzed by the Volhard method. After adding 50.00 mL of 0.06208 M AgNO3, the
7 answers
asked by
yun
2,124 views
A pharmaceutical chemist Runs a chromatography test on a substance and identifies two of its components by comparing their RF
5 answers
asked by
Sarah
2,569 views
2. A fluoride electrode is used to determine fluoride in a water sample. Standards and samples are diluted 1:10 with TISAB
4 answers
asked by
Glyn
771 views
A 25.00mL sample of a household cleaning solution was diluted to 250.0mL in a volumetric flask. A 50.00mL aliquot of this
5 answers
asked by
Ellen
2,568 views
A stainless steel alloy is to be analyzed for its chromium content. A 5.50 g sample of the steel is used to produce 250.0 mL of
4 answers
asked by
Anonymous
220 views
If an air bubble passes unnoticed through the tip of a buret during a titration (where a weak nonvolatile acid HA is the
4 answers
asked by
Kiki
2,181 views
The traditional method of analyzing the amount of chloride ion present in a sample was to dissolve the sample in water and then
7 answers
asked by
James
2,429 views
When 2-propanol was used as the developing solvent, two substances moved with the solvent front (Rf = 1) during TLC analysis on
4 answers
asked by
Mo
1,482 views
1. Why can’t gravimetric analysis be used to determine the concentration of sodium nitrate (NaNO) in a solution?
2. Why is it
4 answers
asked by
Morgan
2,248 views
To analyze for barium in an unknown white powder, an excess of sodium sulfate solution was added to a 0.576 g sample of the
4 answers
asked by
amber
2,330 views
The method of standard additions was used to determine nitrite in a soil sample. A 1.00-mL portions of the soil extract sample
7 answers
asked by
Xian
1,055 views
The concentration of Pb2+ in a sample of wastewater is to be determined by using
gravimetric analysis. To a 100.0-mL sample of
4 answers
asked by
Anonymous
1,873 views
A 50.00-mL sample of groundwater is titrated with 0.0900 M EDTA. Assume that Ca2 accounts for all of the hardness in the
4 answers
asked by
Ashley
4,173 views
You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You
4 answers
asked by
Steven
1,404 views
blank is used to dissipate the error brought about by impurities. What is the other reason of using blank in Mohr method?
4 answers
asked by
emily
2,037 views
A bottle containing a standard solution of KMnO4 is found to have brown stains on the inside. Why will this KMnO4 be of no
4 answers
asked by
red
3,111 views
The concentration of barium ions in any solution can also be determined via gravimetric analysis. An impure sample of barium
4 answers
asked by
sarah
3,211 views
A 0.200 g sample containing Cu is dissolved, and a diethyldithiocarbamate
coloured complex is formed. The solution is then
4 answers
asked by
Kurt
1,220 views
how to determine the oxalate and copper in K[Cu(C2O4)2].2H2O
4 answers
asked by
rayan
1,390 views
Please help with this question, I have no clue how to go about it.
1.3188g of antacid is weighed and mixed with 75.00mL of excess
4 answers
asked by
Serenity
783 views
Why should an Fe3+ solution be used in calibrating the spectrophotometer for the spectrophotometric determination of iron in
4 answers
asked by
smiley
1,072 views
The bubble in the tip of the buret is not removed prior to performing the NaOH standardization. Will the reported concentration
4 answers
asked by
Michelle
3,652 views
A water chemist obtained a 250 ml sample from a nearby lake and fixed the oxygen on-site with alkaline solutions of MnSO4 and
4 answers
asked by
Dalal
2,526 views
how do I carry out qualitative analysis on (NH4)2SO4.FESO4.6H20
4 answers
asked by
john manuel
787 views
What [OH-] should be maintained in a solution if, after precipitation of Mg2+ as solid magnesium hydroxide, the remaining [Mg2+]
6 answers
asked by
Anonymous
306 views
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