Chemistry Homework Help

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33 solutions

Photoelectric Effect

Q. A laser source has an energy of 1.85 kJ from a radiation of 450 nm, how many photons were in the source?

Solved • May 1, 2020

Photoelectric Effect

Q. What is the frequency of electromagnetic radiation with a wavelength of 1.3μm (1.3×10−6m)?

Solved • Apr 14, 2020

Photoelectric Effect

Q. Calculate the frequency of a photon with a wavelength of 503 nm

Solved • Apr 4, 2020

Photoelectric Effect

Q. An energy of 6.9 x 10^-19 J/atom is required to cause an iron atom on a metal surface to lose an electron. a. Calculate the longest possible wavelength of light that can ionize an iron atom. b. In what region of the electromagnetic spectrum is this radiation found? a) UV b) visible c) IR

Solved • Apr 1, 2020

Photoelectric Effect

Q. What is the energy of each of the following photons in kilojoules per mole? λ = 259 m

Solved • Mar 13, 2020

Photoelectric Effect

Q. What is the energy of each of the following photons in kilojoules per mole? v = 1.34x10^6s^-1

Solved • Mar 13, 2020

Photoelectric Effect

Q. What is the energy of each of the following photons in kilojoules per mole? v = 5.92x10^19s ^-1

Solved • Mar 13, 2020