Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 20, Problem 20.5QAP
Interpretation Introduction
(a)
Interpretation:
The range of the field strengths required is to be stated.
Concept introduction:
A magnetic sector instrument is a mass spectrometer which makes use of a static electric or a magnetic sector. These instruments separate the ions in magnetic field as per the momentum of the ion, charge of the ion and the magnetic field strength. The magnetic field bends the ion beams in an arc.
Interpretation Introduction
(b)
Interpretation:
The range of the accelerating voltages required is to be stated.
Concept introduction:
A magnetic sector instrument is a mass spectrometer which makes use of a static electric or a magnetic sector. These instruments separate the ions in magnetic field as per the momentum of the ion, charge of the ion and the magnetic field strength. The magnetic field bends the ion beams in an arc.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
4= An ion with a charge of +3 is accelerated into the 1.79 m flight tube of a linear time-of-flight (TOF) mass spectrometer with an acceleration voltage of 20.0 kV. It takes the ion 74.4 us to reach the detector. What is the mass (m) of the ion? Gives
(5)
A sample of sodium phosphate is dissolved in water to give 100.00 mL of solution (Solution
A). Then this solution is diluted 5 times to give the final solution (Solution B).
Solution B is Known to contain 3.920 x 1022 number of PO43- ions, which has an absorption
peak at 460 nm and absorbance value of 0.355 in a 1.000 cm cuvette.
(i)
Calculate the molar absorptivity of Solution B.
(ii)
What mass of sodium phosphate (MM 163.94 g/mol) dissolved in Solution A.
A 2993.72 m/z ion is accelerated into the 1.85 m flight tube of a linear time-of-flight mass spectrometer with an accelerating
voltage of 10.0 kV. How long will it take the ion to drift through the flight tube and reach the detector?
t =
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
- Assume for the following situations that Beer’s law remains linear. For (a) and (b), indicate whether the extinction coefficient ε, path length b, or concentration C is changing, and how it will change the absorbance of the solution. (a) A sample is moved from a test tube that is 1.0cm wide to a test tube that is 1.5cm wide. (b) A sample is diluted by adding enough solvent to double its volume. (c) A solution of iron (III) chloride appears brown when in high enough concentrations. In a 1.0 cm cuvet, the absorbance of 334 nm light by a 5.4 × 10−4 M solution of FeCl3 is measured to be 1.05. What is the extinction coefficient of the FeCl3 complex at this wavelength? (d) A sample containing an unknown concentration of FeCl3 is measured to have an ab- sorbance of 0.43 at 334 nm in a 1.0 cm cuvet. What is the molar concentration of the solution?arrow_forwardA magnesium-24 ion has a positive charge that is double the charge of a proton, and a mass of 3.98 ✕ 10−26 kg. At a particular instant, it is moving with a speed of 5.00 ✕ 106 m/s through a magnetic field. At this instant, its velocity makes an angle of 58° with the direction of the magnetic field at the ion's location. The magnitude of the field is 0.190 T. (a) What is the magnitude of the magnetic force (in N) on the ion? N (b) What is the magnitude of the ion's acceleration (in m/s2) at this instant? m/s2arrow_forwardCalculate the value of (Nβ - Nα)/N for electrons in a field of (a) 0.40 T, (b) 1.2 T.arrow_forward
- 5. A 7.25x104 M solution of Potassium cyanide (KCN) has a transmittance of 45.2% when measured in a 2 cm cell at a wavelength of 525 nm. Calculate (a) the absorbance of this solution; (b) the molar absorptivity of KMNO4.arrow_forwardRadiation of wavelength 268 nm passed through 1.5 mm of a solution that contained benzene in a transparent solvent at a concentration of 0.080 mol dm-3 . The intensity of the radiation is reduced to 22 per cent of its initial value (so T = 0.22). (a) Calculate the absorbance and the molar absorption coefficient of the benzene. (b) What would be the transmittance through a cell of thickness 3.0 mm?arrow_forwardA student wanted to determine the level of lead in amoxicillin powder, so he transferred 148 mg of the powder to 200 ml volumetric flask and completed the volume volumetrically, then he transferred 5 ml of the obtained solution to 50 ml volumetric flask and completed the volume properly, and read the absorbance of the obtained solution on AAS. The reading was 0.48. and the calibration equation was: "Y =12.25 x- 0.05" (concentration microg./mL). ?"Calculate the content of lead in amoxicillin as "ppm 326.5.a O 605.0 .b O 60.5.c O 17.5.d O 584.7.e O أخل اختياريarrow_forward
- A student wanted to determine the level of lead in amoxicillin powder, so he transferred 148 mg of the powder to 200 ml volumetric flask and completed the volume volumetrically, then he transferred 5 ml of the obtained solution to 50 ml volumetric flask and completed the volume properly, and read the absorbance of the obtained solution on AAS. The reading was 0.48. and the calibration equation was: "Y =12.25 x- 0.05" (concentration microg./mL). Calculate the content of lead in amoxicillin as "ppm"? O a. 326.5 O b. 605.0arrow_forwardAtomic Spectroscopy (a) In terms of spectral shape, how are atomic spectra different from molecular spectra? What is the source of this difference? (b) Describe the decision-making process for picking a line for atomic emission analysis of a given analyte. (c) For quality assurance, spike recovery is not sufficient to establish confidence in an analytical procedure. Explain this statement. What should be done instead to demonstrate satisfactory performance of an instrumental method (including elemental analysis). (d) Find a literature example of atomic spectroscopy used for elemental analysis. State the operating conditions with sufficient detail to reproduce the analysis; Please answer very soon will give rating surely All questions complete Answer needed Please help mearrow_forwardThe transmittance of a solution measured at 590 nm in a 1.5-cm cuvette was 76.2%. (a) What is the corresponding absorbance?(b) If the concentration is 0.0802 M, what is the absorptivity of this species at this wavelength? (c) If the absorptivity is 10,000 L mol-1 cm-1, what is the concentration?arrow_forward
- A 7.25 x 10 ^-5 M solution of potassium permanganate has a transmittance of 44.1% when measured in a 2.10-cm cell at a wavelength of 525 nm. Calculate (a) the absorbance of this solution and (b) the molar absorptivity of KMnO4arrow_forward(b) A system with chemical potential u = 12.5 meV contains identical particles each with integer spin and has a single quantum state at energy E, = 0 meV. The temperature of the system is fixed at 290 K. To three significant figures, what is the ratio Pg/P1, where P is the probability of finding a single particle in the state Eo, and P3 is the probability of finding 3 particles in this state? P3/P (Input your answer as a number.)arrow_forwardAssume for the following situations that Beer’s law remains linear. For (a) and (b), indicate whether the extinction coefficient ε, path length b, or concentration C is changing, and how it will change the absorbance of the solution. (a) A sample is moved from a test tube that is 1.0 cm wide to a test tube that is 1.5 cm wide. 4 (b) A sample is diluted by adding enough solvent to double its volume. (c) A solution of iron (III) chloride appears brown when in high enough concentrations. In a 1.0 cm cuvet, the absorbance of 334 nm light by a 5.4 × 10−4 M solution of FeCl3 is measured to be 1.05. What is the extinction coefficient of the FeCl3 complex at this wavelength?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning