Answer to Question #135017 in Inorganic Chemistry for Destiny Diaz

Question #135017
what is the energy of a mole of photons that have a wavelength of 705 nm?
1
Expert's answer
2020-10-06T09:16:26-0400

E = hc/λ


h = 6.626 x 10−34 J s

c = 3 x 108 m s−1

λ = 705 x 10−9 m


1 mol photons = 6.022 x 1023 photons

Energy of one photon (E) =

= (6.626 x 10−34 J s x 3 x 108 m s−1)/(705 x 10−9m)

= 2.82 x 10-19 J


Energy of one mole photon (E):

x 6.022 x 1023 = 1.70 x 105 J



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