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July 31, 2015

Homework Help: chem need help

Posted by Kjd on Saturday, October 20, 2012 at 4:41pm.

The most prominent line in the atomic spectrum of mercury occurs at a wavelength of 253.652 nm. What is the energy of 0.625 moles of photons associated with the most prominent line? Express answer in kJ.

ANS:
295 kJ

Please explain.. Thank you so much!

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