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Answer on Physical Chemistry Question for William Buford

Question #14013
I am using Cr (Chromium) metal, which forms Cr3+ ions when dissolved. If 0.134 g of the metal dissolve, how moles of electrons passed through the circuit?
Expert's answer
Cr 0 -----> Cr3+ + 3e

n = 0.134/51.99=0.002577

0.002577*3=0.007732 moles

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