Concept explainers
Calculate the energy of photon having: (a) a wavelength of
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
Physical Chemistry
- What is the physical explanation of the difference between a particle having the 3-D rotational wavefunction 3,2 and an identical particle having the wavefunction 3,2?arrow_forwardThe Lyman series of spectral lines for the H atom, in the ultraviolet region, arises from transitions from higher levels to n = 1. Calculate the frequency and wavelength of the least energetic line in this series.arrow_forwardWould the light from fireflies be considered an example of a fluorescence or a phosphorescence process?arrow_forward
- Determine the energetic difference between state n = 2 and n = 1 for a proton in a one-dimensional box of length 100 nm. At what wavelength does that energy correspond?arrow_forwardWhat is the modulated wavelength of mercury vapor light at a temperature of 88°F and barometric pressure of 725 mmHg, known that the frequency of modulation is 30 MHz?arrow_forwardA particle freely moving in one dimension x with 0 ≤ x ≤ ∞ is in a state described by the normalized wavefunction ψ(x) = a1/2e–ax/2, where a is a constant. Evaluate the expectation value of the position operator.arrow_forward
- An electron is confined to a square well of length L. What would be the length of the box such that the zero-point energy of the electron is equal to its rest mass energy, mec2? Express your answer in terms of the parameter λC = h/mec, the ‘Compton wavelength’ of the electron.arrow_forwardConsider a collection of 10,000 atoms of rubidium-87, confined inside a box of volume (10-5 m)3. Suppose that T = 0.9Tc. How many atoms are in the ground state? How close is the chemical potential to the ground-state energy? How many atoms are in each of the (threefold-degenerate) first excited states?arrow_forwardWhat should be the speed of a beam of particles of mass 9.25×10-28 g in order to have a wavelength of 7.27 nm?arrow_forward
- For the system described in Exercise E7B.1(b) (A possible wavefunction for an electron in a region of length L is sin(3πx/L). Normalize this wavefunction (to 1)), what is the probability of finding the electron in the range dx at x = L/6?arrow_forwardWhat is the power in Watts (J/s) of a research laser that emits light at a wavelength of 555 nm and emits 3.4 x 10^18 photons/s?arrow_forwardTo what speed must a proton be accelerated from rest for it to have a de Broglie wavelength of 100 pm? What accelerating potential difference is needed?arrow_forward
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning