Recall from wave mechanics that

Velocity of wave = frequency * wavelength

e = 0.17 * 10^6 = 1.7 * 10^5 J

So, total energy is

e = h f

where h = Planks constant (Js); f = frequency (Hz)

One mole = 6.02 * 10*23, so one mole of photons will have a total energy of

One mole = 6.02 * 10*23, so one mole of photons will have a total energy of

e = 0.17 * 10^6 = 1.7 * 10^5 J

From reference tables

h = 6.63 * 10^-34 Js; v = 3 * 10^8 m/s; = 695 * 10^-9 m

From reference tables

h = 6.63 * 10^-34 Js; v = 3 * 10^8 m/s; = 695 * 10^-9 m

e = h v / Joules

e = 0.17 * 10^6 = 1.7 * 10^5 J

So, total energy is

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