How many photons are there in if 1 mole of a photon has an energy of ?

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General Chemistry 1

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Solve problems relating to electromagnetic radiation

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Avegail BelanoLv10

5 Jan 2021

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Related questions

If it takes 112 kcal/mol to fix a mole of CO2, into a carbohydrate, what is the efficency of conversion of light energy to chemical energy after photon capture? Assume again that 8 photons of red light (680 nm) are required to fix one mole of CO2.

planks constant = 1.58 x 10 ^-37 kcal/sec/photon

mole per photon = 6 x10 ^23

One type of sunburn occurs on exposure to UV light of wavelength in the vicinity of 325 nm. (a) What is the energy of a photon of this wavelength? (b) What is the energy of a mole of these photons? (c) How many photons are in a 1.00 mJ burst of this radiation? (d) These UV photons can break chemical bonds in your skin to cause sunburn—a form of radiation damage. If the 325-nm radiation provides exactly the energy to break an average chemical bond in the skin, estimate the average energy of these bonds in kJ/mol.

b) 1 mole of photons has Avogadro’s number of photons. Energy of 1 mole of photons is:

c) Number of photons in 1 mJ of radiation is calculated by dividing total energy with the energy of one photon:

d) Average energy of chemical bonds (in human skin equals the energy of photons with 325 nm wavelength, which is already calculated to be 3.68×10⁵ J/mol which is 368 kJ/mol.