A student measures the following using a crude colorimeter. Intensity of blank =206 Intensity of solution = 168 %3D What abosorbance value would the student report for the sample?
Q: 1. What is the gravimetric factor involved? 2. What is the percentage weight of the analyte in…
A: Here, substance sought : Cl- Substance weighed : AgCl
Q: Internal standard. A mixture containing 12.8 mM analyte (X) and 44.4 mM standard (S) gave…
A:
Q: Retention Time Area of Peak % of Total Identity Component 1 Component 2 Component 3
A: Given data:
Q: 1. What's the slope of the calibration curve? 3.95 x 10-5 4.17x10-5 1 20484 25257 2. What's the…
A: The linear regression equation of the calibration curve is: Y = 25257X - 114.32
Q: A solution containing 2.30 mM of X (analyte) and 1.15 mM of S (standard) gave peak areas of 1728 and…
A: Given, known Amount of X = 2.30 mM, amount of S = 1.15 mM Peak area of X is 1728 and that of S is…
Q: 100 ml boiled cooled and filtered water sample takes 9.6 ml of M/50 EDTA in titration. The…
A: The hardness degree can be calculated in term of CaCO3 equivalent asDegree of Hardness=Wt. of…
Q: The retention factor for analytes in a sample lie between 1 and 5 why?
A: The analyte is the substance to be separated during chromatography. It is also normally what is…
Q: 1. Calculate the difference in retention volumes for solutes A and B that are passed through a…
A: Chromatography is the technique for the separation of a chemical mixture. The mixture may be…
Q: 1) Consider the peaks for pentafluorobenzene and benzene in the gas chromatogram shown here. The…
A:
Q: According to HPLC analysis by internal standard addition the calibration equation is as follows: y =…
A: Introduction: HPLC stands form High Performance Liquid Chromatography or High Pressure Liquid…
Q: You have to make 100mL of 0.05M HCI from a 10M HCI stock solution, but the only measuring devices…
A: Given that, Molarity of Stock HCl solution M1 = 10 M Molarity of dilute HCl solution,M2 = 0.05 M…
Q: A fish sample was analyzed for crude protein content using the Kjeldahl method. The following data…
A: Solutions- Given data- Moisture content 10.0%Weight of sample 2.15 gNormality of HCl used for…
Q: A mixture of species of A, B, and C is injected into a liquid chromatographic column with length of…
A: Selectivity factors measure as the distance between two chromatography peak. Retention factor (k)…
Q: Gradient elution used in HPLC. How is the gradient created for a reverse-phase HPLC experiment over…
A: Given that Gradient elution is used in HPLC. To find: How is the gradient created for the…
Q: Explain this problem
A: Since you have posted a question with multiple sub-parts, as per our guidelines we will solve first…
Q: . Consider the chromatogram shown below (used with permission from the Honors Thesis of Mark…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: How would i perform a serial dilution of 1/2 and 1/4 if i have 7.5mL of an unknown protein, the…
A: The molarity of a solution is the number of moles of solute in the solvent. Molarity varies with the…
Q: 1) To estimate the accuracy and precision of the method of determination of glucose in a blo sample,…
A: Accuracy can be defined as how close the reading is to actual reading . It can be measured by…
Q: Spectrophotometric Determination of a Metal A 100.00 mL of exactly 250.0 mg/L Cu2+ stock solution…
A: To answer why NH3 is added to each standard solution before diluting with distilled water.
Q: Analysis of Percent Organic Matter of * a soil sample was conducted and the data are shown below.…
A:
Q: mitligrams Were weighted to prefake Hoo PPm oR Ligcoz in Yomt Ligeogino mt 20 mg 5 28 mg 15 mg
A: Given Volume = 70 mL 1000 mL = 1 Liter 70 mL = 701000Liter = 0.07 Liter…
Q: Volume of dye solution added (mL) 9.80 mL Concentration of bleach solution used (M) 0.090 M Volume…
A: Given data : The concentration of the stock yellow dye in solution in Mole (Mi) is = 3.40 x 10-5 M…
Q: Gas chromatography separation depends on volatility as a factor of retetion time, the temperature of…
A:
Q: Two different methods were investigated for Cu2+ detection in water sample and both methods…
A: To choose the correct option:
Q: Choose the best answer. What are the factors that need to be considered in HPLC to ensure the two…
A: Introduction : HPLC means High pressure liquid chromatography it is used to find out the drug…
Q: A solute with a retention time of 400.0 s has a width at half-height of 8.0 s on a column 12.2 m…
A: Introduction: Chromatography: Chromatography is an analytical technique used to separate the…
Q: In a GC run, dodecane was used as test solute for a 30 m x 250 ?m i.d. DB-5 column. The dodecane…
A: Theoritical plate in chromatography is a key parameter of chromatography. It is a index of coloumn…
Q: A mixture of species of A, B, and C is injected into a liquid chromatographic column with length of…
A: Chromatography is an analytical and separation technique which is used to separate the components…
Q: An analyte has an Rf value of 0.25. What does that indicate about the solubility of the analyte in…
A:
Q: Explain how it is that SPE cartridges & disks allow analysts to more efficiently pre- concentrate…
A: Interpretation- To explain that how SPE cartridges and disks allow analysts to more efficiently…
Q: Objective: To determine the percent NaCl (w/v) of a water sample 5.00 mL sample diluted to 50 mL…
A: Balanced chemical equation: NaCl (aq) + AgNO3 (aq) ------> NaNO3 (aq) + AgCl (s) From the…
Q: 8. U sing a 10-mL graduate calibrated in 1-mL units, explain how you would measure 1.25 mL of a dye…
A: Volume of dye to be measured = 1.25 mL We have to use a 10-mL graduate calibrated in 1-mL units…
Q: A micropipette was used to draw 450 microliters of solvent X and when measured using an analytical…
A:
Q: Objective: To determine the percent NaCl (w/v) of a water sample 5.00 mL sample diluted to 50 mL…
A: The question is based on the concept of quantitative estimation. we have to calculate percentage…
Q: 1. Given the following chromatogram, mark the middle of each cation spot and calculate the Ry value…
A:
Q: An analyst was measuring the performance of a HPLC column. The test solute was Toluene (5 µL). The…
A: To find out the mobile phase velocity, number of theoretical plates and height equivalent to…
Q: 1. Sensitivity in a flow-injection analysis is directly proportional to the height of an analyte's…
A: Answer is option e Increase in flow rate, decreasing the length and diameter of tubing using a…
Q: IC An analyte has a Rf value of 0.50, What does that indicate about the solubility of the analyte in…
A: Retention factor describes the ratio of time spent in the stationary phase relative to time spent in…
Q: From the experiment in Question 1, the following data were obtained: 2. Distance traveled by spot O…
A:
Q: A measurment for the Lambda-max for a colored solution is 671 nm with a very high Absorptivity.…
A: The frequency of light is the ratio of the standard speed of the light in a vacuum to the light's…
Q: You are provided with a stock standard with a concentration of 100 mg/L, and a solution of unknown…
A: A question based on absorption that is to be accomplished.
Q: Table 2. Effect of injection volume and temperature on retention time, peak width and resolution.…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: method as follows: punty of an ibuprofen sample was determined by a reversed phase HPLC Y A…
A: Equation for the best-fit line of the calibration curve is: y=26820x-1323.8
Q: Prepare a standard curve from the data below from a Bradford assay. Samples were prepared from a…
A: Use the conversion factor 1000 μg1 mg to convert amount of protein in mg to μg. Example: 2.5 mg…
Q: Gradient elution used in HPLC. How is the gradient created for a reverse-phase HPLC experiment over…
A: High performance liquid chromatography or HPLC is an analytical technique used to identify and…
Q: 12. A standard solution with known concentrations of tartaric acid and fumaric acid was prepared and…
A:
Q: Standard Solutions for FENCS2* Ion Beer-Lambert Plot mL of 2.00 x 101 M Fe(NO,)3 in 0.10 M HNO, mL…
A:
Q: why do we have to order samples (from least concentrated -most concentrated) when measuring the…
A: A question based on qualitative analysis, which is to be accomplished.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- 6 PLEASE PROVIDE THE INTERPRETATION OF ALL SAMPLES FOR HELPFUL RATINGS. THANK YOU. *INCLUDE ALL YOUR REFERENCESMass of Sample Volume of KMnO, solution used in titration Equivalents of permanganate used Equivalents of iron (II) in sample Moles of iron (II) in sample Grams of Iron in Sample % Iron in Sample Average % Iron in Unknown Instructor's Grade for Precision in Part B. Sample Calculations Part B: 0.58179 0.68719 28.19 ml 31,96m6 007662 00266 2 11 nSCE students measured the concentration of HCl in a solution by titrating with different indicators to find the end point.Indicator Mean HCl concentration (M)(± standard deviation)Number of measurementsBromothymol blue 0.09565 ± 0.00225 28Methyl red 0.08686 ± 0.00098 18Bromocresol green 0.08641 ± 0.00113 29Is the difference between indicators 1 and 2 significant at the 95% confidence level? Answer the same question for indicators 2 and 3
- Students measured the concentration of HCl in a solution by titrating with different indicators to find the end point. (Use the table to find critical F values.) Mean HCl concentration (M) (+ standard deviation) Indicator Number of measurements 1. Bromothymol blue 0.09565 + 0.00170 28 2. Methyl red 0.08681 ± 0.00098 18 3. Bromocresol green 0.08641 + 0.00106 29 Is the difference between Indicators 1 and 2 significant at the 95% confidence level? O Yes O No Fenlculated clegrees of freedom Ecalculated Is the difference between indicators 2 and 3 significant at the 95% confidence level? O Yes O No Fealculated Spooled tcalculatedHow will the analyte concentration be altered if the titrant volume recorded is greater than required? cannot be determined from the information given It will be reported lesser than the actual concentration. It will be reported the same as the actual concentration. It will be reported greater than the actual concentration.Please do't provide handwritten solution
- What is the dilution factor for Sample 1 if 20 µL of extract is added to 980 µL distilled water?2 Trial 1: [4] Volume of NaOH, dispensed (mL) Trial 1: [5] Molar concentration of NaOH (mol/L) Trial 2: [4] Volume of NaOH, dispensed (mL) How Trial 2: [5] Molar concentration of NaOH (mol/L) Trial 3: [4] Volume of NaOH, dispensed (mL) Trial 3: [5] Molar concentration of NaOH (mol/L)Preparation of sodium standard solutions with concentrations of 10, 20, 40, 60, 80, 100 (ppm) in a volume of 100 ml for each solution. [using a 100 ppm reference solution prepared from a weight of sodium chloride in a volume of 1 liter]
- 1. An instrument reading for a standard solution whose concentration is 8.0ppm is 0.651.This same instrument gave a reading of 0.597 for an unknown. What is the concentration of the unknown?Pls provide solutionA student carries out a titration to determine the molar mass and structure of a weak acid A. The student follows the method below. Dissolve a weighed mass of A in 100 cm3 of distilled water and make the solution up to 250 cm in a beaker. Add the solution of A to a burette. Titrate the solution of A with a standard solution of sodium hydroxide, NAOH. (a) What is meant by the term standard solution? (b) Sodium hydroxide is an alkali. What is meant by the term alkali? (c) The student carries out a trial, followed by three further titrations. The diagram shows the initial and final burette readings for the three further titrations. The student measures all burette readings to the nearest 0.05 cm3. Titration 1 Titration 2 Titration 3 Initial reading Final reading Initial reading Final reading Initial reading Final reading 27