shakoriagaston4172 shakoriagaston4172
  • 12-09-2018
  • Physics
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A green laser pointer has a wavelength of 532 nm. what is the energy of one mol of photons generated from this device?

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Blacklash
Blacklash Blacklash
  • 21-09-2018

We have energy E = hc/λ, where h is Planck's constant c is speed of light and λ is the wavelength.

So Energy , [tex]E=\frac{6.63*10^{-34}*3*10^8}{532*10^{-9}} =3.73*10^{-19}J[/tex]

Energy of one mol = [tex]3.73*10^{-19}*6.023*10^{23}=225 kJ/mol[/tex]

Energy of one mol of photons generated from this device = 225 kJ

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