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# Solution: The energy of light calculated using the formulas below tell you the energy per photon of light. E = h x v E = h x c / λ If light has a wavelength of 789 nm, what is the energy of this light expressed in kJ/mol?

###### Problem

The energy of light calculated using the formulas below tell you the energy per photon of light.

E = h x v

E = h x c / λ

If light has a wavelength of 789 nm, what is the energy of this light expressed in kJ/mol?

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