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Homework Statement
The work function for chromium is ##7.0 \times 10^{-19} J##.
What is the wavelength of the light that has just enough energy to cause electrons to be emitted from chromium metal?
What is the work function of chromium, in kJ/mol?
Homework Equations
The Attempt at a Solution
I believe this question is missing some information? Here's what I have so far:
##E = K_e + W##
##\frac{hc}{\lambda} = K_e + W##
##\lambda = \frac{hc}{K_e + W}##
I can't exactly find the kinetic energy here I think.
The second question is easy, just convert the work function to kJ and take it per mol.