a 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units). A second 50-mL aliquot of teh sample, which is spiked with 1.00-mL of a 10.0-ppm standard solution of the analyte, gives a signal or 23.1. what is the concentration of analyte in the original sample?

a 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units). A second 50-mL aliquot of teh sample, which is spiked with 1.00-mL of a 10.0-ppm standard solution of the analyte, gives a signal or 23.1. what is the concentration of analyte in the original sample?

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter1: Introduction

Section: Chapter Questions

Problem 1.9QAP

See similar textbooks

Related questions

Q: A 10.00-g sample containing an analyte was transferred to a 250-mL volumetric flask and diluted to…

A: As per Lambert Beer's Law- Absorbance = Molar absorptivity coefficient * Path length * Concentration…

Q: 5. 3) Lithium in blood serum of a manic-depressive patient treated with lithium carbonate is…

Q: Single standard addition method was.16 applied for spectrophotometric analysis of Na+ in a 25 mL…

A: Let us suppose the amount of Na in unknown water sample be x ppm. If we are added the solution 0.500…

Q: How will mistakenly using solution 1 to calibrate the spectrophotometer, instead of the blank effect…

A: Blank solution is used to calibrate the absorbance with Transmittance(%T) and set a zero value by…

Q: Standard addition. Analyte in an unknown gave a signal of 10.0 mV. When 1.00 mL of 0.050 0 M…

A: Given, The Unknown signal of 10.0 mV 1.00 mL of 0.050 0M standard was added to 100.0 mL of unknown…

Q: Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of…

Q: You are asked to do quality control and quality assurance during the determination of lead…

A: The limit of quantitation is given by the expression: Limit of quantitation=10 sm where,…

Q: In the process of performing a spectrophotometric determination of Fe, an analyst prepares a…

A: The calibration curve was made by the expert with a certaain cuvette and after it was broken, he…

Q: Suppose that s = 0.28 nA instead of 0.56 nA, but yblank is still 1.26 nA. Find the signal detection…

A: SOLUTION: Step 1: The slope of the calibration is 0.229nA/micrometer. The standard deviation sample…

Q: The following are three sets of data for the atomic mass on antimony (Sb) from the work of Willard…

A: Note: According to our company's guidelines, I am supposed to answer only first three sub parts. so…

Q: An analyst needs to evaluate the potential effect of an interferent, I, on the quantitative analysis…

A: You have posted multipart of question as per the guidelines i have solved first three subparts…

Q: Standard addition. A blood serum sample containing Na gave an emission signal of 4.27 mV. A small…

A: The the method of standard addition is used to calculate the original concentration of Na+.

Q: A 10.00-g sample containing an analyte was transferred to a 250-mL volumetric flask and į diluted to…

A: Solution - According to the question - Given - In the spiked sample, the signal is due to 10 ml of…

Q: A 25.0 ml sample containing Cugave an instrument reading of 23.6 units (corrected for a blank). When…

A: Interpretation: The molar concentration of Cu2+ in the sample is to be determined.

Q: PART B. Spectrophotometrilc Determination of the Copper Content of a Penny Mass of penny:3.138 Date…

Q: The calibration curve for FD&C yellow #5 dye has a slope of 35188 L/mol with an intercept of 0.007.…

A: Given: Calibration curve for FD&C yellow #5 dye has Slope = 35188 L/mol Intercept = 0.007…

Q: A sample of an alum was analysed by atomic spectroscopy and gravimetrically to determine its…

A: Given data :- A 0.1000 g of the sample when treated with BaCl₂ produced 0.0984 g of a white solid…

Q: A spectrophotometric method for the quantitative analysis of Fe2+ in blood uses Zn2+ as an internal…

A: Given, Zn2+ is the internal standard Fe2+final = 3.25 ppbZn2+final = 0.75 ppbSignal for Fe2+, SFe2+…

Q: You obtained the following raw data when setting up a Biuret standard curve: Absorbancy 540nm BSA…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: In the determination of Pb in a contaminated fishmeal, 5.08 g of sample was weighed. Digestion with…

A: Here we are required to find the concentration of Pb in the sample in ug/kg and the % of Pb in…

Q: Internal standard. A solution was prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of…

Q: 1. Consider the following data set. Concentration, mg/L 0.100 0.200 0.300 0.400 0.500 Write capital…

A: We have find out slope, intercept and concentration of an unknown sample with an absorbance reading…

Q: Mass spectral measurements were made on 10 replicate low concentration Ni-EDTA samples: 171.7,…

A: TRANSPORT-PROPERTY AND MASS SPECTRAL MEASUREMENTSIN THE PLASMA EXHAUST PLUME OF AHALL-EFFECT SPACE…

Q: 5. A solution prepared by mixing 10.00 mL of unknown (X) with 5.00 mL of standard (S) containing…

A: Relation between signal ratio and concentration ratio ;AxAs= K Conc. of XConc. of…

Q: Why is the spectrophotometer set at 100% T using the FeCl3 solution rather than distilled water? The…

A: A spectrophotometer is an instrument that is used to measure the amount of light absorbed by the…

Q: Data and Calculat Method II Depth in mm Volume in mL, 2.00 × 10-3 M Volume in mL, 2.00 x 10-3 M…

A: The reaction occurring above can be written as: Fe3+ (aq) + SCN- (aq) →[FeSCN]2+ (aq) Concentration…

Q: Which of the following statements concerning calibration curves are true? 1. A plot of signal…

A: Calibration curves are used to understand instrumental response to an analyte and to predict the…

Q: Reagent blanks gave the following values: Blank 1 2 3 4 5 6 7 Signal, nA 1.4 2.2 1.7 0.9 0.4 1.5 0.7…

A: (8) Total number of Data = 10 Mean of all the readings will be - Mean = Addition of all…

Q: 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units). A second 50-mL…

Q: 1. The instrumental signal from pesticide X in an unknown is 185.6 µA. When 25.0 mL of 0.0325 M…

A: Let the molar concentration of X in the unknown sample be 'a'.

Q: In a Bradford assay, 17 pl of a protein isolate sample was diluted by adding 24 pl of water prior to…

A: Given calibration curve data:

Q: An analyst needs to evaluate the potential effect of an interferent, I, on the quantitative analysis…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Three replicate determinations of Stotal for a standard solution that is 10.0 ppm in analyte give…

A: Average signal of 10 ppm standard sample = (0.163 + 0.157 + 0.161) AU / 3 = 0.1603 AU Actual signal…

Q: A solution containing Cu2+ is analyzed by atomic absorption and gives an absorbance of 0.01000…

Q: Lithium in a sample is determined by flame emission spectrometry, using a standard additions…

A: If 10 microlitres of 0.010M of lithium nitrate on addition gives 14.6 units, then the sample without…

Q: One definition of analytical method limit of quantitation, LOD, in a GLP laboratory is a signal that…

Q: A 10.00 g sample containing an analyte was transferred to a 250 mL volumetric flask and diluted to…

A: Given, sample is 10 g which is transferred to 250 ml volumetric flask. The first signal after…

Q: Čalculate the concentration of an AMD sample that has an absorbance of 0.155 an the following…

A: Without using the intercept value we can find the concentration at its respective absorbance using…

Q: To identify the amount of caffeine in my coffee using an HPLC instrument, standard solutions of…

A: We are given the signal versus concentration data for standard solutions. So first we have to plot…

Q: 2. A spectrophotometric method for the quantitative determination of the concentration of Pb in…

A: Given:- To find the concentration of the lead in the blood sample and its equation is:…

Q: Consider the following data set: Sample Corrected Absorbance at 470 nm 100 ug/ml CuSO. standard 200…

A: The standard calibration plot is below-

Q: to the kit manual 200uL of plasma was mixed with 2.8 ml of the dilution buffer, mixed well then 200…

A: Solution:- The sample's final concentration would be 15.

Q: Low Concentrations of Ni-EDTA near the detection limit have the following counts in a mass spectral…

A: The sensitivity count can be determined from the standard deviation of the experiment. The standard…

Q: Analyte in an unknown gave a signal of 9.3 mV. When 100 mL of 0.211 M standard was added to 100.0…

A: Given: The Unknown signal of 9.3 mV When 100 mL of 0.211 M standard was added to 100.0 mL of unknow…

Q: analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU)…

A: concentration of mixture= C1V1+C2V2+C3V3+C4V4/(V1+V2+V3+V4)

Q: Data Sheet: Assuming that the following data were the result of the experiment, compute for the %…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A standard curve for glucose analysis was prepared.The slope (m) was found to be 1.341 while the…

A: Given: Slope(m) = 1.341 y-intercept = -0.333 Absorbance (y) = 0.151

Q: 3. This is the standard procedure for determination of nicotine in urine. A 1.00mL sample was placed…

A: A question based on tools in analytical chemistry that is to be accomplished.

Question

100%

1. a 50.00-mL sample containging an analyte gives a signal of 11.5(arbitrary units). A second 50-mL aliquot of teh sample, which is spiked with 1.00-mL of a 10.0-ppm standard solution of the analyte, gives a signal or 23.1. what is the concentration of analyte in the original sample?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

The 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?
A 10.00 g sample containing an analyte was transferred to a 250 mL volumetric flask and diluted to volume. When a 10.00 mL aliquot of the resulting solution was diluted to 25.00 mL it was found to give a signal of 0.235 (arbitrary units). A second 10.00 mL aliquot was spiked with 10.00 mL of a 1.00 ppm standard solution of the analyte and diluted to 25.00 mL. The signal for the spiked sample was found to be 0.502. Calculate the weight percent of analyte in the original sample.
A 10.00-g sample containing an analyte was transferred to a 250-mL volumetric flask and diluted to volume. When a 10.00-mL aliquot of the resulting solution was diluted to 25.00 mL it was found to give a signal of o.235 (arbitrary units). A second 10.00-mL aliquot was spiked with 10.00 mL of a 1.00- ppm standard solution of the analyte and diluted to 25.0o mL. The signal for the spiked sample was found to be o.502. Calculate the weight percent of analyte in the original sample.
River water analysis of mercury (Hg) yields a spectrophotometric sample signal of 0.712 for a 5.00 mL sample. A 5.OuL spike of 1560 ppb Hg standard produced a signal of 1546. What is the concentration of Hg in the original river water sample? What is the concentration of Hg in the original river water sample? A. 1.109 ppb B. 1.330 ppb C. 1.771 ppb D. 1.546 ppb
Analyte in an unknown gave a signal of 9.3 mV. When 100 mL of 0.211 M standard was added to 100.0 mL of unknown, the signal increased to 16.7 mV. Find the concentration of the original unknown solution.
Standard addition. Analyte in an unknown gave a signal of 10.0 mV. When 1.00 mL of 0.050 0 M standard was added to 100.0 mL of unknown, the signal increased to 14.0 mV. Find the concentration of the original unknown.
A sample solution containing quinine was analysed by fluorescence spectroscopy. 5 mL of the sample solution was diluted with 0.1 M HCl to a final volume of 100 mL. The fluorescence of the solution was measured and gave a value of 54. A reference solution containing 0.086 mg/mL of quinine gave a fluorescence reading of 38. A blank solution gave a fluorescence reading of 21. Calculate the quinine content of the sample solution in mg/mL.
A spectrophotometer method for the quantitative analysis of Pb2+ in blood uses Cu2+ as an internal standard. A standard containing 1.75 ppb Pb2+ and 2.25 ppb Cu2+ yields a signal of 0.832 for Pb2+ and a signal of 0.351 for Cu2+. A sample of blood is spiked with the same concentration of Cu2+, giving a signal of 0.520 for Pb2+ and 0.289 for Cu2+. Determine the concentration of Pb2+ in the sample of blood.
An unknown sample of Cu2+ gave an absorbance of 0.475 in an atomic absorption analysis. Then 5.00 mL of solution containing 75.0 ppm (= µg/mL) Cu2+ was mixed with 45.0 mL of unknown, and the mixture was diluted to 500.0 mL in a volumetric flask. a) Write an expression for the final concentration after dilution. b) Calculate the final concentration of the added standard. c) The absorbance of the new solution was 0.987. Find the initial concentration of Cu2+ in the unknown sample
3. The lead in a swab sample, lead standards, together with a blank were made up in 5.00 mL volumetric flasks using 0.2 % HNO3. 20 μL aliquots of these solutions were injected into the spectrophotometer and the absorbance measured at 217 nm. The following results were obtained. lead / ppb Absorbance 0 0.0591 10.00 0.0858 50.00 0.1926 100.0 0.3260 150.0 0.4594 200.0 0.5929 Swab sample 0.3700 (a) Determine the amount of lead in the swab sample in μg.
A spectrophotometric method for the quantitative analysis of Fe2+ in blood uses Zn2+ as an internal standard. A sample containing Fe2+ and Zn2+ with final concentration of 3.25 ppb and 0.75 ppb, respectively, that yields a signal of 0.423 for Fe2+ and 0.650 for Zn2+. Subsequently, a sample of blood is spiked with Zn2+ to give the same final concentration and yielded a signal of 0.832 for Zn2+ and 0.110 for the unknown concentration of Fe2+. Determine the concentration of Fe2+ in the sample of blood.
asap