how much energy is contained in one mole of xray photons with a wavelength of 0.155nm?

Question

ipwnbunnies · Answer

We can find the energy of one photon:
$$E = \frac{hc}{\lambda}$$

ipwnbunnies · Answer

Where 'h' is Planck's Constant, 'c' is the speed of light, and lambda is the wavelength in meters.

anonymous · Answer

Thank you!

ipwnbunnies · Answer

But that's only the energy of one photon. To get the energy of a whole mole, you could have to multiply by Avogadro's Number.
$$(energy_{photon})*(6.022*10^(23) \frac{photons}{mol})$$

anonymous · Answer

Do the units for energy have to be in kJ/mol?

ipwnbunnies · Answer

Um, yeah they can be. When you find the energy of that one photon, it'll be in Joules. When you find the energy of ALL the photons at first, it'll be in J/mol. Then, you would have to convert to kJ/mol.