Assume that the first line of the rotational spectrum (J = 0 → J = 1) of CO is 3.8424 cm-1. Calculate the length of the CO bond in picometer (10-12 m). To mark the answer, neglect the fractional part and do not write the unit. Information: mass of carbon: 12 c.u. mass of oxygen: 16 c.u. h = 6,6261 x 10-34 J.s π = 3,1416 c = 2,9979 x108 m.s-1 N = 6,0221 x 1023 mol-1

Assume that the first line of the rotational spectrum (J = 0 → J = 1) of CO is 3.8424 cm-1. Calculate the length of the CO bond in picometer (10-12 m). To mark the answer, neglect the fractional part and do not write the unit. Information: mass of carbon: 12 c.u. mass of oxygen: 16 c.u. h = 6,6261 x 10-34 J.s π = 3,1416 c = 2,9979 x108 m.s-1 N = 6,0221 x 1023 mol-1

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

Chapter15: Molecular Luminescence Spectrometry

Section: Chapter Questions

Problem 15.2QAP

See similar textbooks

Similar questions

The space immediately surrounding stars, the circumstellar space, is significantly warmer because stars are very intense black-body emitters with temperatures of several thousand kelvin. Discuss how such factors as cloud temperature, particle density, and particle velocity may affect the rotational spectrum of CO in an interstellar cloud. What new features in the spectrum of CO can be observed in gas ejected from and still near a star with temperatures of about 1000 K, relative to gas in a cloud with temperature of about 10 K? Explain how these features may be used to distinguish between circumstellar and interstellar material on the basis of the rotational spectrum of CO.
Tell me the bonds (e.g. C=O, C-O) and range of wavelength numbers (cm-1) present in Nujol mull?
Express 4000 Åh = 6.626 x 10-34 J s c = 2.998 x 108 m s-1a. In nanometers:b. As a wavenumber (cm-1):c. As an energy in joules:
Calculate the mass and linear absorption coefficients of air for CrKα radiation. Assume that air contains 80 % N2 and 20 % O2 by weight and has a density of 1.29 x10-3g/cm3?
Explain the principal work of atomic absorption spectroscopy? And how is it used for the determination of unknown heavy metals and other metals concentrations?
Does the exclusion rule apply to H2O?
The force constant for the bond in CO is 1857 N m−1. Calculate the vibrational frequencies (in Hz) of 12C16O, 13C16O, 12C18O, and 13C18O. Use integer relative atomic masses for this estimate.
Calculate the proportion of I2 molecules in their basal state, first and second excited state at 25 °C. The wave number is 214.6 cm−1 Hints: Equidistant levels, relation wave numbers and energy y (kT/hc) = 207.226 cm−1 a) At what temperature does the level ν = 1 of I2 have i) half of the population of the basal state, ii) the same population as the basic state?
1.) A local FM radio station broadcasts at an energy of 6.04×10-29 kJ/photon. Calculate the frequency at which it is broadcasting.Frequency = __________ MHz (1 MHz = 106 sec -1) 2.)A local FM radio station broadcasts at a frequency of 96.0 MHz.Calculate the energy of the frequency at which it is broadcasting.Energy =__________ kJ/photon(1 MHz = 106 sec -1)
2. The observed nuclear moments of 209 Bi are: I=9/2; μ = + 4.1 μN; Q=-0.4 x 10-28 m² Determine the expected values for these moments according to the simple Shell model and comment on any significant differences.
Calculate the proportion of I2 molecules in their basal state, first and second excited state at 25 °C. The wave number is 214.6 cm−1 Hints: Equidistant levels, relation wave numbers and energy y (kT/hc) = 207.226 cm−1 2) At what temperature does the level ν = 1 of I2 have i) half of the population of the basal state, ii) the same population as the basic state? I need to understand and solve the second question
Calculate the vibrational energy of the v = 2 state of 1H127 I relative to the ground state, including the anharmonic corrections.