In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with cobalt, which has a threshold energy of 8.01 x 10-¹⁹ J, and ultraviolet light of wavelength 74.3 nm, what would be the kinetic energy (in J) of the electron displaced?

In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with cobalt, which has a threshold energy of 8.01 x 10-¹⁹ J, and ultraviolet light of wavelength 74.3 nm, what would be the kinetic energy (in J) of the electron displaced?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with cobalt, which has a threshold energy of 8.01 × 10⁻¹⁹ J, and ultraviolet light of wavelength 29.5 nm, what would be the kinetic energy (in J) of the electron displaced?
When a metal was exposed to photons at a frequency of 1.45 x 105 s-, electrons were emitted with a maximum kinetic energy 3.80 x 10-19 J. Calculate the work function, 4, of this metal. J/photon What is the maximum number of electrons that could be ejected from this metal by a burst of photons (at some other frequency) with a total energy of 7.92 x 10-7 J? number of electrons:
What is the wavelength in NANOmeters of light that has an energy per photon of 5.36 x 10^19 J?
A Li2+ ion absorbs a photon with a frequency of 6.66 x 10^14 Hz. If the energy of the final state of Li2+ was -7.85 x 10^19 J, calculate the energy of the initial state.
Payalben
Calculate the wavelength(nm) of light that strikes a metal with a threshold frequency of 2.84 x 1014s-1 and ejects an electron with a kinetic energy of 5.48 x 10-19J.
What is the wavelength (in nm) of a photon if the energy is 5.25 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J • s)
What is the threshold frequency for sodium metal if a photon with frequency 6.66 ×× 1014 s−1 ejects an electron with 7.74 ×× 10−20 J kinetic energy? Will the photoelectric effect be observed if sodium is exposed to orange light?
The work function (φ) for a metal is the amount of energy needed to eject an electron from the surface of the metal via the photoelectric effect. For nickel φ = 8.25 x 10-19J. Will a photon with a wavelength (λ) of 250.0 nm have enough energy to eject an electron from nickel? If the speed of an electron in the n = 4 energy level of a hydrogen electron is 2.3 x 106 m/s, what is the de Broglie wavelength of this electron in nanometers (the mass of an electron is 9.10938 x 10-31 kg). Note: 1 ? = 1 ?? ∙?2 An F-15 Strike Eagle weighs in at roughly 32,000 kg fully loaded. If an F-15 Eagle is traveling at 3,017 kilometers per hour, what is the de Broglie wavelength associated with the aircraft at this speed in nanometers?
Determine the energy, in J, of a photon with a wavelength of 351 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)
A hydrogen atom absorbs a photon with a wavelength of 1094 nm and causes an electron to make a transition from an unknown n1 to a final n2 = 6. Part A Calculate frequency of the absorbed photon in units of s-1. Part B Calculate the energy change in the atom (ΔEatom in J) upon absorption of the photon. Part C Calculate the value of n1
What is the energy (in J) of a photon with a frequency of 7.07 × 10¹⁴ s⁻¹? (h = 6.626 × 10⁻³⁴ J • s)