how do you calculate the amount of photons in a burst of light given wavelength and energy?

Chemistry
Tutor: None Selected Time limit: 1 Day

Apr 3rd, 2015

C.

Enrgy = hc/wavelength =


find energy per photon  



= (6.626x10^-34 x 3 x 10^8)/ 589 x 10^-9 = 3.74 x 10^-19Joules 

divide total energy by the energy of each 

609000 Joules / 3.74 x 10^-19Joules 

=1.80 X 10(24) photons 


Apr 3rd, 2015

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