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 =
Q: What accelerating voltage would be needed to analyze for N2+ (MW = 28.01) using a magnetic sector…
A: We know that mass spectroscopy mz=B2r22VWhere,m=mass of ion Z= charge on ionB= magnetic field…
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A: The structure of nylon-6,6 is provided below:
Q: 5 a) A cell of 10 mm path length contains ferric chloride solution of 0.002M. An electromagnetic…
A: Absorbance = 0.60 Concentration = 0.002 M Path length = 10 mm 1 mm = 0.1 cm 10 mm = 1 cm Now,…
Q: Spectrum 99 97 95 93 91 89 87 85 83 81 79 77 4000 3500 3000 2500 2000 1500 1000 500 Wave Number…
A: IR provides the information about the functional groups of unknown.
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Q: 70 105 140 Mass M/e 175 21 1.1 1.0 0.9 0.8 0.7 what functional graups arepresent? 0.6 0.5 0.4 0.3…
A: The answer is given as follows There is C=O functional group in this spectrum
Q: The magnetogyric ratio of 19F is 2.5177 x 108 T-1 s-1. Calculate the frequency of the nuclear…
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Q: A solution containing 5ppm KMNO4(F.W.159) has a transmittance of 0.360 measured in 1 cm cell at 500…
A: Concentration of KMnO4 solution = 5 ppm Transmittance = 0.360 Cell diameter = 1 cm
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Q: Calculate the resolution required to resolve peaks for N2+ (MW = 28.0061) and CO+ (MW = 27.9949)
A: Given data is: Mass of N2+ = 28.0061 and Mass of CO+ = 27.9949
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A: To find accelerating velocity we use the formula Where, K.E= kinetic energy m= mass of the ion…
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Q: What is the Doppler-shifted wavelength of a red (680 nm) traffic light approached at 60 km h−1?
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Q: Electron probe microanalysis (EPMA)
A: Answer:- Electron probe microanalysis (EPMA) uses the plan of action uses bombardment of the…
Q: 5 a) A cell of 10 mm path length contains ferric chloride solution of 0.002M. An electromagnetic…
A: Since these are subquestion, each question is not related to each other. Therefore in multiple…
Q: A solution containing 5ppm KMnO4(F.W.159) has a transmittance of 0.360 measured in 1 cm cell at 500…
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Q: A 7.21 x 10−5 M solution of potassium permanganate has a transmittance of 52.1% when measured in a…
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A: %Transmittance can be calculated as: %T=PP0×100=VV0×100 =169 mV690 mV×100…
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A: Given: The drift length is 200 cm. The charge of each ion is 1. The m/z value of ions is 66 and 43.…
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Q: A %T 1. 0.052 2. 0.916 3. 0.378 4. 0.269 5. 0.075
A: The relationship between transmittance and absorbance is: T = 10-A ......(1) %T = T x 100 ......(2)
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Q: Convert the following Transmittance to absorbance: T=0.305
A: The various relations between Absorbance (A) and Transmittance (T) are as fallows 1) A = -log10 T…
Q: %Transmitance 3345.22 1665.76 1597.577.05 1493.7248.84 1202.89 9 T001.62 1068.b08.08 965.16 019.23…
A: IR peak corresponds to different functional groups present in a molecule.
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Q: An ion with a charge of +3 is accelerated into the 1.79 m flight tube of a linear time-of-flight…
A: Given data Charge = z = +3Length of tube = l = 1.79 mTime = t = 74.4 μs = 74.4 * 10-6 sV = 20.0 kV…
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A: Given: Fluorescence intensity (I) = 815 Irradiance of beam (P0) = 1571 Length of medium (b) = 0.868…
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Q: T IVİ. «20. Livin 2 Calculate the magnetic moment of Mn in KMn(NCS)6].
A: Given-> K4[Mn(NCS)6] Spin magnetic moment = √(n(n+2)) BM
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Q: Estimate the lifetime of a state that gives rise to a line of width (i) 0.20 cm−1, (ii) 2.0 cm−1.
A: (a) lifetime of a state =h2πdE with, dE = hc x l l = line width h = planck's constant c = 3.0 x…
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A: Given data: The molar absorptivity ɛ=6.17×103 L.cm-1mol-1. The transmittance range T=less than 85%…
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A: The relation between the position of a spectral line from the central maximum and the separation…
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- In a mass spectrometer, two beams of singly ionized isotopes of uranium 23592U and 23892U are injected with velocity 1.4*105m/s into a magnetic field of strength 0.7 T normally. Compute the distance d between the two trace lines of the isotopes after they complete one semi-circle. (Given: masses of the isotopes are m235 = 3.9*10-25 kg and m238 = 3.95*10-25) a) 1.26 cm b) 0.63 cm c) 0.32 cm d) none of these.The magnetogyric ratio of 19F is 2.5177 x 108 T-1 s-1. Calculate the frequency of the nuclear transition in a field of 7.500 T.The quantum yield of light-induced chemical reactions (called photochemical reactions) measures the efficiency of the process. The quantum yield, ϕ, is defined as:ϕ=numberofreactioneventsnumberofphotonsabsorbed . Suppose a quantum yield for the reaction CH3X→CH3+Xis ϕ= 0.95. A cuvette containing a solution of CH3Xis irradiated with 280-nmwith a power of 885 mWfor 10.0 minutes. Part A Assuming total absorption of the light by the sample, what is the maximum amount (in moles) of CH3Xthat breaks apart?Express your answer to two significant figures. nothingmolCH3Xm o l C H 3 X actual
- Suppose a student is preparing a set of standard solutions for use in a spectrophotometric study. If percent transmittance, %T, were measured in the standard solutions before the color had a chance to fully develop, the measured value would be compared with solutions that have allowed the color to fully develop.You are working in a laboratory that makes frequent use of a scanning tunneling microscope (STM) to study surfaces of materials. The current through the tip of an STM (see figure) is very sensitive to differences in the width of the gap between the tip and the sample surface. Assume the transmission coefficient for the electron falls off exponentially in this direction with a decay length of 0.100 nm, that is, with C = 10.0 nm¯¹ in T = e−2CL. Your supervisor asks you to determine the ratio of the current when the STM tip is 0.498 nm above a surface feature (I) to the current when the tip is 0.526 nm above the surface (I2). + (i)What is the Doppler-shifted wavelength of a red (680 nm) traffic light approached at 60 km h−1?
- An analysis of Zn2+ in food sample by atomic absorption spectroscopy gave a calibration curve of A = 456.8 CZn + 1.234 where A is the absorbance. The concentration of Zn2+ (CZn) is expressed in molarity. If a measurement of the blank gave a signal of 1.234 ± 0.050 (mean ± S.D. ). What was the limit of detection for Zn2+ in molarity?3. The change in frequency produced by the Doppler shift when a sound source of frequency f is moving with velocity v toward a fixed observer is given by fv Af (u-v) and v and their uncertainties, calculate Af and its uncertainty. Which, if any, of where u is the velocity of sound. From the following values of u, f, the uncertainties make a negligible contribution to the uncertainty in Af ? u = (332 ± 8) m s1; f = (1000 ± 1) Hz; and v = (0.123 ± 0.003) m s15. Atomic emission spectroscopy relies on emission of light by the analyte. An ICP plasma has a temperature of 6200 K for a particular instrument. Using the Boltzmann equation, describe the relative intensities for a signal with a wavelength of 300 nm versus a signal with a wavelength of 600 nm.
- The levels of Vitamin B1 in a sample of milk was determined using the Standard Addition method and technique of fluorescence spectroscopy. 18.0 ml of the milk sample was diluted to 20.0 ml using distilled water and then the fluorescence was measured. The resulting signal was 210 units. A spike was made by taking 18.0 ml of the same milk sample, adding 1.0 ml of a 6.0 ppm Vitamin B1 standard solution, and then diluting to 20.0 ml using distilled water. The signal of the spiked milk was 540 units. Calculate the concentration of Vitamin B1 in the original milk sample (in ppm). Report to 3 decimal places.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 the solution, and (b) the molar absorptivity.(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.)