Question

Calculate the energy of 1 mole of photon of radiation having frequency 5×10hz

Answer 1

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energy = number of photons * energy in one photon

= n h v

= 6.023 * 10²³ * 6.626 * 10⁻³⁴ * 5 * 10¹⁴ Joules

= 199.54 kJoules

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Answer 2

Answer:

The energy of one photon (E) =hv

Here, h=6.626×1034 js

 

v=5×1014s−1

E=6.626×10−34×5×1014

3.313×10−19 j

Thus the energy of one mole of photons is E×A 

Where A is the Avogadro number

=3.313×10−19j×6.022×10−23 mol

=199.50×10−3jmol