Find longest wavelength of light that used to eject electron
It takes 217 kJ/mol to eject electrons from a certain metal surface. What is the longest wavelength of light (nm) that can be used to eject electrons from the surface of this metal via the photoelectric effect?
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A file of student records contains name, sex (M or F), age (in years) and marital status (single or married) for each student.
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