a photochemical reaction requires 9.6 into 10 power 16 energy per molecule calculate the number of photons per molecule of light with wavelength 250 nm that is just sufficient to initiate the reaction
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Answer :The number of photons per molecule is, 1206
Solution :
First we have to calculate the energy of photons.
Formula used :
where,
E = energy of photon = ?
h = Planck's constant =
c = speed of light =
= wavelength =
Now put all the given values in the above formula, we get the energy of the photons.
The energy of photons is,
Now we have to calculate the number of photons per molecule.
Therefore, the number of photons per molecule is, 1206
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