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

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter6: Electronic Structure And The Periodic Table
Section: Chapter Questions
Problem 63QAP: A carbon dioxide laser produces radiation of wavelength 10.6 micrometers (1micrometer=106meter)....
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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.

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