Asked by dave
                Consider a red flame color produced by excited lithium with a wavelength of 671 nm. What is the mass equivalent of 1 mol of photons of this wavelength?
I can get as far as Js of E
Can't seem to find equation to turn Js into mols, or photons into mols, for Js into photons.
I'm lost
            
        I can get as far as Js of E
Can't seem to find equation to turn Js into mols, or photons into mols, for Js into photons.
I'm lost
Answers
                    Answered by
            bobpursley
            
    E=h*c/lambda   Solve for E, the energy in one photon, then multily it by avagradros number.
    
                    Answered by
            dave
            
    ahh, of course, thank you.
    
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