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April 26, 2015

Homework Help: chemistry

Posted by Emily on Sunday, November 7, 2010 at 6:04pm.

Light with a wavelength of 405 nm fell on a strontium surface, and electrons were ejected. If the speed of an ejected electron is 3.49 105 m/s, what energy was expended in removing the electron from the metal? Express the answer in joules (per electron) and in kilojoules per mole (of electrons).

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