A recent study found that electrons that have energies between 3.25 eV and 19.1 eV can...
A recent study found that electrons that have energies between 3.25 eV and 19.1 eV can cause breaks in a DNA molecule even though they do not ionize the molecule. If a single photon were to transfer its energy to a single electron, what range of light wavelengths could cause DNA breaks?
What is the minimum wavelength and what is the maximum wavelength, in nm?
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A recent study found that electrons that have energies between
3.25 eV and 19.1 eV can...
A recent study found that electrons that have energies between 3.05 eV and 20.5 eV can...
A recent study found that electrons that have energies between 3.05 eV and 20.5 eV can cause breaks in a DNA molecule even though they do not ionize the molecule. If a single photon were to transfer its energy to a single electron, what range of light wavelengths could cause DNA breaks? minimum wavelength: maximum wavelength: In which part of the electromagnetic spectrum does this light lie? a. Infrared b. gamma ray c. ultraviolet d. radio
1. Electrons are ejected from a metal surface with energies ranging up to 0.5 eV when...
1. Electrons are ejected from a metal surface with energies ranging up to 0.5 eV when light with a wavelength of 538 nm is used. What is the work function of the metal in units of eV? 2. What is the deBroglie wavelength (in nm) of a neutron (m = 1.67*10-27 kg) moving with a speed of 68 m/s? Enter a number with 2 decimal places. 3. A gamma ray photon has an energy of 0.84 GeV. (1 GeV =...
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove...
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an electron from an atom or molecule. In such an experiment a beryllium atom in the gas phase is to be ionized by two different light beams, one of which has wavelength 235 nm. What is the maximum wavelength for the second beam that will cause two-photon ionization? Hint: The ionization energy of beryllium is 899.4 kJ/mol ---------------------------nm
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove...
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an electron from an atom or molecule. In such an experiment a silicon atom in the gas phase is to be ionized by two different light beams, one of which has wavelength 252 nm. What is the maximum wavelength for the second beam that will cause two-photon ionization? Hint: The ionization energy of silicon is 786.4 kJ/mol
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an ele...
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an electron from an atom or molecule. In such an experiment a gallium atom in the gas phase is to be ionized by two different light beams, one of which has wavelength 403 nm What is the maximum wavelength for the second beam that will cause two-photon ionization? Hint: The ionization energy of gallium is 578.8 kJmol nm Submit Answer 5 question attempts remaining
Work shown please. Answers to the following questions: 1) 3.864 x 10^-19 J 2.412 eV 5.831...
Work shown please. Answers to the following questions:
1) 3.864 x 10^-19 J
2.412 eV
5.831 x 10^14 Hz
2) 154 pm
3) 1.94 x 10^-18 J or 12.1 eV
4) 32 electrons
Chapter 29 & 30 Homework Problem Set Use extra paper if needed 1. What is the energy (in joules and eV) and frequency carried by a photon with a wavelength of 514.5 nm? answer 2. What is the wavelength of a photon that produces a photoelectron with...
A helium atom has two electrons, let us call them electron 1 and 2. Suppose electron...
A helium atom has two electrons, let us call them electron 1 and 2. Suppose electron 1 is in the ground state and electron 2 is in the first excited state. 1. Calculate the minimum energies (in eV) of photons needed to eject each electron out of the atom. [5 points) 2. Draw an energy level diagram for a helium atom and indicate the transitions in part 1. You do not need to calculate the energies of various energy levels....
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found...
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found that light has to be above a certain frequency in order to observe photoelectrons The Planck constant is 6.626x10^-34 J s. The calcium metal has a work function WO = 2.71 eV, 1eV = 1.6x10^-19). (a) What is the Cutoff frequency for the calcium metal? Write the result in terms of 1014Hz. Keep 3 decimal places. Enter a number x1024Hz Submit (5 attempts remaining)...
Suppose that an electron is trapped in a one- dimensional, infinite potential well of width 250...
Suppose that an electron is trapped in a one- dimensional, infinite potential well of width 250 nm is excited from the 2nd excited state to the fifth excited state. What energy must be transferred to the electron in order to make this transition? Answer: 1.62 x 10^-4 eV Check Correct Marks for this submission: 2.00/2.00. What wavelength photon does this correspond to? Answer: 75.15*10^-4m Check Considering all of the possible ways that the excited electron can de-excite back down to...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the following metals: Sodium Aluminum Platinum For the photon energies you calculated in problem #1, calculate the wavelength and frequency for each. In what part of the electromagnetic spectrum do these photons belong? Calculate the radii and energies of the first three allowed orbits for the Bohr Model of the hydrogen atom in both joules and electron-volts. Show your work. Calculate the energies of photons...
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an electron from an atom or molecule. In such an experiment a silicon atom in the gas phase is to be ionized by two different light beams, one of which has wavelength 252 nm. What is the maximum wavelength for the second beam that will cause two-photon ionization? Hint: The ionization energy of silicon is 786.4 kJ/mol
In two-photon ionization spectroscopy, the combined energies carried by two different photons are used to remove an electron from an atom or molecule. In such an experiment a gallium atom in the gas phase is to be ionized by two different light beams, one of which has wavelength 403 nm What is the maximum wavelength for the second beam that will cause two-photon ionization? Hint: The ionization energy of gallium is 578.8 kJmol nm Submit Answer 5 question attempts remaining
Work shown please. Answers to the following questions:
1) 3.864 x 10^-19 J
2.412 eV
5.831 x 10^14 Hz
2) 154 pm
3) 1.94 x 10^-18 J or 12.1 eV
4) 32 electrons
Chapter 29 & 30 Homework Problem Set Use extra paper if needed 1. What is the energy (in joules and eV) and frequency carried by a photon with a wavelength of 514.5 nm? answer 2. What is the wavelength of a photon that produces a photoelectron with...
A helium atom has two electrons, let us call them electron 1 and 2. Suppose electron 1 is in the ground state and electron 2 is in the first excited state. 1. Calculate the minimum energies (in eV) of photons needed to eject each electron out of the atom. [5 points) 2. Draw an energy level diagram for a helium atom and indicate the transitions in part 1. You do not need to calculate the energies of various energy levels....
Quantum Physics - Photoelectric Effect 1 Light Light2 Photo- electrons KEL KEN-W Photoelectric Effect Lenard found that light has to be above a certain frequency in order to observe photoelectrons The Planck constant is 6.626x10^-34 J s. The calcium metal has a work function WO = 2.71 eV, 1eV = 1.6x10^-19). (a) What is the Cutoff frequency for the calcium metal? Write the result in terms of 1014Hz. Keep 3 decimal places. Enter a number x1024Hz Submit (5 attempts remaining)...
Suppose that an electron is trapped in a one- dimensional, infinite potential well of width 250 nm is excited from the 2nd excited state to the fifth excited state. What energy must be transferred to the electron in order to make this transition? Answer: 1.62 x 10^-4 eV Check Correct Marks for this submission: 2.00/2.00. What wavelength photon does this correspond to? Answer: 75.15*10^-4m Check Considering all of the possible ways that the excited electron can de-excite back down to...
Consider a photoelectric effect experiment. Calculate the minimum photon energy needed to produce photoelectrons for the following metals: Sodium Aluminum Platinum For the photon energies you calculated in problem #1, calculate the wavelength and frequency for each. In what part of the electromagnetic spectrum do these photons belong? Calculate the radii and energies of the first three allowed orbits for the Bohr Model of the hydrogen atom in both joules and electron-volts. Show your work. Calculate the energies of photons...
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