2. What measurements might you record regarding water samples to assist with the quantification process? How might these measurements have error introduced?
Q: Identify the lettered compounds in attached reaction sequence.
A:
Q: х. Choose the correct answer: 1) Hз0, 2) heat ?????? OCH3 OH OH B) A) OCH3 OH D) OCH3
A:
Q: Na 6. CH3C 2n B dust (A Aleds 7. NaOH
A: Phenoxide ion can be prepared by using phenol with sodium metal. The phenoxide ion is considered to…
Q: Q1/ How many molar masses are contained in 1- 5.76 g of KI ?( Atomic mass K=39, l=127) 2-4.00 liter…
A:
Q: 1) O, -78°C V> 2) DMS KCN H. HCN
A: Organic reaction mechanisms
Q: How would you turn a qualitative experiment into a quantitative experiment?
A: Interpretation - We have to explain how we can turn a qualitative experiment into a quantitative…
Q: What is the role of sodium and chloride ions in this experiment
A: A spectator ion is an ion that exists as a reactant and a product in a chemical equation. and it…
Q: What is the basis of distillation?
A: There are various techniques which are used for the separation of liquids. Some of these are…
Q: Calculate the mass percent of Zn in ZnO. Report your answer to 1 decimal place.
A:
Q: mass
A: Mass spectrometry serves as an exceptionally useful method in the field of forensic drug analysis,…
Q: During sample introduction in mass spectrometer, the sample is first vaporized then ionized by the…
A: Mass spectrometer: The mass of a molecule is determined by a mass spectrometer by measuring its…
Q: SOC2 Br NaCN A [1] (CH3)2CuLi [2] H20 [1] LIAIHA [2] H,0 CH3OH, H* PCC [1] DIBAL-H [1] CH,Li G [2]…
A: The products A, B, D, E, F, G, and H are shown as follows:
Q: Why is classifying compounds important?
A: Classification is generally grouping of compound based on their similarity in the properties of…
Q: How important is identifying chemicals and Laboratory apparatuses used in an analysis?
A: You should always know your lab equipment well before you do any type of experiment because without…
Q: Br + NaCN Br + 2 NH3 S Na CH;-I: Na* CH,-: H,N: Br:
A: when primary, secondary and benzyl halides reaction with strong nucleophile undergo nucleophilic…
Q: Predict the sign of ΔS for
A: Entropy is referred to the degree of disorderness or randomness within a system provided and it…
Q: 3g. 2Fe203 + 3C ----> 3CO2 + 4Fe 3h. Fe2S3 ----> 2Fe + 3S 3i. 2KI + Pb(NO3)2 · ----> 2KNO3 + Pbl
A:
Q: 8Ca → 3. 65 Sc 65 4. Be + He C + -> P + H 31 15 32 15 5. 16S + Hе 35 6. 1ci +
A: Dear student, As you have asked multiple question but according to guidelines we will solve first…
Q: What problems of society can analytical chemists help in finding solutions? How do they do it?…
A: Analytical chemistry deals with the analysis of different substances. In the process firstly, the…
Q: Why was it necessary for separation techniques and methodsof chemical analysis to be developed…
A: Law of definite composition states that the composition of a particular compound is the same no…
Q: Complete the Calculations to find the weight NV= wt %3D 60 lo00 0,945 = 60 %3D loou
A: We can solve the calculation by cross multiplication. We know that, normality is the gram equivalent…
Q: 1. What is a spectrophotometer used for in a cobalt chloride solution analysis?
A:
Q: Me LOTS Br. 1 equiv. NaN3 DMSO `Br Nal Br acetone Br
A: Sodium alkoxide reacts with alkyltosylate to form ether Primary alkyl halide is more reactive than…
Q: What are the products of the following reactions?
A: Solution:- (a)
Q: Et20 + СНЗСН2LI H3O+ а. CH212 Zn/Cu Et20 b. LiCu(CH3)2 C. H3CO 1.Mg, THF 2.НСОН H3O+ Br d.
A: In this question, we want to draw all the products in each cases. You can see below all the…
Q: Draw the major product formed in each reaction.
A: major products formed in each reaction are
Q: H30* d. [1] CH3OH, H* CH30 MgBr е. [2] (2 equiv) [3] H20 LOH [1] SOCI2 f. [2] CH3CH,CH,CH,NH2 [3]…
A:
Q: complete this please
A: In the above reaction, the HCl is an acid and hence it will provide H+ ions. And ZnCl2 is being used…
Q: What is the purpose of the acetic acid experiment?
A: We have to discuss about the purpose of acetic acid experiment.
Q: Base: 215 conj: 60 subs: 68 exo: 5 B-ring: 35 381 259 (9,500) calc: 259 388 (18,000) calc: 381 225…
A:
Q: 0.9gm/500ml/NaoH/Na=23/O=16/H=D1
A: Molarity is asking, in this question using molarity is moles of solute/ volume of solution in (L)
Q: Why does the test for the presence of potassium involve a flame test?
A: The question is based on the concept of qualitative analysis . We have to explain the flame test for…
Q: Q2: Do the data support the idea that running the tap water before taking a sample made the lead…
A: From the data given we can see that the concentration of lead in the sample taken in the 1st draw is…
Q: 4. N- 1) CH31 (еxcess) 2) Ag20 3) A H2N CCH2CH3 1) NaNO2, H20, HCI 2) HBF4 3) A 5. 6.
A: ->Amine has nucleophilic character because Nitrogen has loan pair hence, give nucleophilic…
Q: а. NaOH + HC1→ NaCl + H2O b. Pb2+ + 2C - PbCl2 с. AGNO; + HC1 → HNO3 + AgCi d. 2HC2H;O2 + Ca(OH)2 →…
A: Redox reaction
Q: Explain the principle of the distillation process?
A: Distillation method is used to separate two miscible liquids having different boiling points without…
Q: What type of distillation do we use to separate a mixture of water and acetic acid and why?
A: Distillation is the process by which two liquids are separated from a mixture through evaporation…
Q: e) Ba(OH)2(a9) + H2OM → Ba (aa) + 20H(aq) f) Be(OH)2(a9) + H2OM → Be* (20) + 20H(29)
A: Answer:- This question is answered by using the simple concept of nature of reaction which depends…
Q: 1 ед. NaBH4 methanol 1) excess LIAIH4 OH 2) H20 HO 1) еxcess MgBr 2) H3O* Ph3P=
A:
Q: Part E Cd²+ and S?- Express your answer as a chemical formula. 2Cds Submit Previous Answers
A: Given: Cation Charge = Cd2+ Anion Charge = S2- Ionic Compound: The chemical compound composed of…
Q: given your experience in mass determinations (Experiment 1) and with volumetric glassware…
A: Density of a substance can be calculated from mass and volume of it. The more precise measurement…
Q: What is polarity and how is polarity related to how chromatography works?
A: In chemistry, polarity of a molecule is defined as the electric charge distribution over the atoms…
Q: Cae AS he baianced chemical egaton Snand S /OK- ml 206 207 So 24
A:
Q: (A.H) RCONCS CH,CONCS NH2 'R M.w=(63.20 H. ELOH M.W: M.W: 303.75 g: 1.8325
A:
Q: Explain the Schematic of a mass spectrometer ?
A: A mass spectrometer is an instrument that is very useful in the structure elucidation of organic…
Q: e) 1) CH2 N2 4. HO cl 2) Ag20 wree tremechaui sm? 3) Hzo
A:
Q: How many g of water you need to add into HCl solution (V= 130.0 cm3 mass percentage 22.0 % (w/w),…
A: Mass = Volume ×Density
Q: What is polarity in chemistry
A: It is a physical property of compound which relates other physical properties such as melting point,…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- QUALITATIVE DETECTION OF ORGANIC COMPOUNDS Would you say that all organic compounds give evidence of containing carbon when they are burned or heated?To determine the amount of copper and the identity of the copper compound in the unknown sample, a 100-mL solution containing 120.8 mg of the sample was initially prepared. Then, 5.00 mL of this solution was pipetted and diluted with deionized water in another 100-mL volumetric flask. The absorbance of this diluted solution was determined three times at the analytical wavelength. The data is in the table below. Unknown sample Trial 1 Trial 2 Trial 3 Absorbance (AU) 0.378 0.379 0.377 What is the corrected absorbance?To determine the amount of copper and the identity of the copper compound in the unknown sample, a 100-mL solution containing 120.8 mg of the sample was initially prepared. Then, 5.00 mL of this solution was pipetted and diluted with deionized water in another 100-mL volumetric flask. The absorbance of this diluted solution was determined three times at the analytical wavelength. The data is in the table below. Unknown sample Trial 1 Trial 2 Trial 3 Absorbance (AU) 0.388 0.389 0.388 What is the Corrected Absorbance of each trial? How do you get the corrected absorbance?
- A student measures the absorbance of a solution in lab a total 4 times and obtained the following results:0.219, 0.224, 0.206, 0.223a. Using the Grubbs test, decide whether any values should be rejected at the 95% confidence level.b. What should the student report as the 95% confidence interval for the absorbance of the solution?To determine the amount of copper and the identity of the copper compound in the unknown sample, a 100-mL solution containing 120.8 mg of the sample was initially prepared. Then, 5.00 mL of this solution was pipetted and diluted with deionized water in another 100-mL volumetric flask. The absorbance of this diluted solution was determined three times at the analytical wavelength. The data is in the table below. Unknown sample Trial 1 Trial 2 Trial 3 Absorbance (AU) 0.375 0.374 0.376 What is the concentrartion of Cu in the analyzed solution?7 determination of sodium, potassium and calcium in water samples by ICP-OES. 1. kindly assist me with discussion in the experiment 2. results of the experiment 3 experimental/ methodology
- Chemistry Instrumental Analysis Class The experiment is OES: Cleaning Validation of removal of pharmaceutical drugs and calibration standards by fluoresence spectroscopy - Why the instrument use two detectors and monochromators? What type of monochromators are used in our instrument? - Do you think that a similar experiment can be prepared for the analysis of naproxen and benzoic acid? Explain.fill in the column thats empty by finding the standard deviation for each average absorbance, with work please.27 REPORT SHEET EXPERIMENT Separation of the 2. Components of a Mixture A. Determination of Mass Percent of Ammonium Chloride • Mass of evaporating dish and original sample ラタ0 6 ラ Mass of evaporating dish Mass of original sample Mass of evaporating dish after subliming NH4CI 49.025 •Mass of NH4CI 1.82 Percent of NH,Cl (show calculations) % ea B. Determination of Mass Percent of Sodium Chloride Mass of evaporating dish, watch glass, and NaCl 97.738 3.34 Mass of evaporating dish and watch glass -Mass of NaCl % - Percent of NaCl (show calculations) C. Determination of Mass Percent of Silicon Dioxide 46054 8 Mass of evaporating dish and SiO2 Mass of evaporating dish 2.35 s ちち Mass of SiO2 Percent of SiO, (show calculations)
- Question 19 of 27 > Graphs are a common data analysis tool used in all branches of science. The given graph represents how light absorbance at 423 nm varies with concentration of an organic dye. Identify the parts of the graph. Answer Bank y = 0.210x – 0.032 line equation Title Abs423 Dye Conc. (nM) best-fit line 0 i 2 3 4 5 6 7 8 9 10Chemistry Common Isotopes and Mass spectrum of element Mo are given below Most common isotopes: Mo-98; Mo-96 Mo-95; Mo-92; Mo-97 ; Mo-100; Mo-94 Calculate the average atomic mass of Mo How the MS determined the relative intensity (Scale of 100) and Isotope abundance (%)? Why absolute intensity was not used? Can detector sensitivity, ICPMS temperature influence the relative intensity? ExplainThe ppm concentration of Pb2+ in a blood sample were measured with Spectrophotometry. 5.00 mL of a blood sample were taken and this sample gave a signal of 0.301 a.u.. Another 5.00 mL of a blood sample were mixed with 0.50 mL og 1.75 ppm Pb2+. Then, this mixture was diluted to 25.00 mL and this diluted mixture gave a signal of 0.406 a.u.. What is the ppm concentration of a blood sample?