- #1
Master J
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Homework Statement
"Mono-energetic electrons are diffracted by a lattice. Their wavelength is shown to be L=0.35nm. What are the energies of the electrons?"
Homework Equations
E=hf
c=hL
The Attempt at a Solution
c/L gives 8.566exp17
h=6.626exp-34
I plug them in and get: 5.66exp-19 J
The answer is 1184.4 kJ mol -1.
So I divide my answer by 1000, and multiply it by Avogadros number. But my answer is nowhere near the actual answer. Where am I going wrong?