I needed assist with one concern in a set of questions. The concerns that are before the one ns need assist with are: (need assist with bolder ones)One form of sunburn wake up on exposure to UV irradiate of wavelength in the vicinity of 310 nm.a. What is the power of a photon the this wavelength? E=6.41×10−19 J b. What is the energy of a mole of this photons? E=3.86*10^5 Jc. How countless photons are in 1.20 mJ explode of this radiation?? N=? photonsd. These UV photons can break chemistry bonds in her skin to reason sunburn—a type of radiation damage. If the 310 nm radiation provides exactly the energy to break an median chemical shortcut in the skin, estimate the average power of these bonds in kJ/mol? average energy= kJ/mol


You are watching: How many photons are in a 1.20 mj burst of this radiation?

Logged
BorekMr. PHAdministratorDeity Member
*
Posts: 26757Mole Snacks: +1736/-403Gender: ns am well-known to be occasionally wrong.

Logged
ChemBuddy chemistry calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info, pH-meter.info
sydRegular MemberPosts: 18Mole Snacks: +1/-0

I needed help with one inquiry in a collection of questions. The concerns that are prior to the one i need aid with are: (need aid with bolder ones)One form of sunburn occurs on exposure come UV irradiate of wavelength in the vicinity of 310 nm.a. What is the energy of a photon the this wavelength? E=6.41×10−19 J b. What is the energy of a mole of these photons? E=3.86*10^5 Jc. How many photons space in 1.20 mJ burst of this radiation?? N=? photonsd. These UV photons can break chemistry bonds in her skin to reason sunburn—a type of radiation damage. If the 310 nm radiation provides specifically the power to break an average chemical shortcut in the skin, estimate the average power of these bonds in kJ/mol? median energy= kJ/mol
For c, there is an equation the you deserve to use. It's something choose #photons = ePulse/ePhoton. Both are claimed to it is in measured in J, so you have a an easy conversion to execute first.Good luck v D
*

XenophiliusInorganic ChemistRegular MemberPosts: 21Mole Snacks: +0/-3Gender: aut viam inveniam aut faciam


See more: How To Say Do You Speak Japanese In Japanese ', How To Say “Do You Speak English” In Japanese

You deserve to use the equation: E=(n*h*(speed of light))/Wavelength. In nanometer the product h*(speed of light) comes out to be practically 1240nm. Hence your prize is merely E/4.