The energy-level diagram for the atomic emission spectra of an unknown gas is presented in the diagram below. n= 4 4.0 ev n= 3 1.8 ev n=2 1.5 ev n=1 O ev Part A Initially, electrons are only in the ground state (n=1). A beam of red light hits the gas. This beam is a continuous spectrum of red light (from 620 nm to 750 nm) How many absorption line/s will there be in the spectra?
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- An electron is in the ground state of a square well of width L = 4.00 x 10-10 m. The depth of the well is six times the ground-state energy of an electron in an infinite well of the same width. Part A What is the kinetic energy of this electron after it has absorbed a photon of wavelength 79 nm and moved away from the well? Express your answer in electron volts. K = ΜΕ ΑΣΦ Submit Request Answer ? eVhelp pleaseAn electron confined to a one-dimensional box of length 0.70 nm jumps from the n = 2 level to the ground state. Part A What is the wavelength (in nm) of the emitted photon? Express your answer to two significant figures and include the appropriate units. ΜΑ ? A = Value Units Submit Request Answer Provide Feedback
- Part A The intensity of sunlight hitting the surface of the earth on a cloudy day is about 0.50 kW/m² Assuming your pupil can close down to a diameter of 2.0 mm and that the average wavelength of visible light is 550 nm, how many photons per second of visible light enter your eye if you look up at the sky on a cloudy day? Express your answer using two significant figures. N = ΜΕ ΑΣΦ Submit Request Answer ?Part A Applying the Bohr model to a triply ionized beryllium atom (Be³+, Z = 4), find the shortest wavelength of the Lyman series for Be³+. Express your answer using four significant figures. ΠΫΠΙ ΑΣΦ λ = Submit Request Answer Part B |AE| = Applying the Bohr model to a triply ionized beryllium atom (Be³+, Z = 4), find the ionization energy required to remove the final electron in Be³+. Express your answer using three significant figures. 5 ΑΣΦ Submit ? Request Answer nm ? eVThe Balmer series, or Balmer lines in atomic physics, is one of a set of six named series describing the spectral line emissions of the hydrogen atom. The Balmer series is due to transitions of electrons to the energy level with n=2. Using the ideas and treatment seen in class, find the three largest wavelengths corresponding to lines of the Balmer series. Express your results in nm.
- Question 14 a) A narrow beam of white light is passed through a clear glass vessel containing cool hydrogen gas at a low pressure. A prism is used to disperse the light leaving the vessel. This results in a white light spectrum, crossed by a series of dark lines. Explain the origin of these dark lines and name the type of spectrum that is produced. b) Some of the atomic energy levels of hydrogen are shown in the diagram below. i. ii. iii. Energy/eV 0 -0.85 -1.51 -3.39 -13.58 n = 4 n = 3 n = 2 n = 1 Determine the ionization energy of hydrogen and express this in joules. Determine the wavelength of the light emitted when an electron falls from the n = 3 level to the n = 1 energy level. A photon of energy 10.19 eV is in collision with a hydrogen atom. What would happen to this photon?In the photoelectric-effect experiment, as illustrated by the figure, a current is measured while light is shining on the cathode. But this does not appear to be a complete circuit, so how can there be a current? Explain.can you solve C please
- Part A What is the energy range (in joules) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = J Submit Request Answer Part B What is the energy range (in eV) of photons of wavelength 390 nm to 740 nm ? Express your answers using two significant figures separated by a comma. ? Emin. Emax = eV Submit Request Answer Provide FeedbackElectrons are emitted when a metal is illuminated by light with a wavelength less than 383 nm. Part A What is the metal's work function? ΜΕ ΑΣΦ E = Submit Request Answer Provide Feedback ? eVThe work function of cesium is 2.1 eV. ▾ Part A Determine the lowest frequency photon that can eject an electron from cesium. Express your answer with the appropriate units. Templates Symbols undo' rego Teset keyboard shortcuts Help Value Units Request Answer Part B Determine the maximum possible kinetic energy in electron volts of a photoelectron ejected from the metal that absorbs a 320-nm photon. Express your answer in electronvolts. Templates Symbols undo' redo Teset keyboard shortcuts Help Kmax= eV f= Submit