Homework Help: physical chemistry

Posted by lucy on Wednesday, February 17, 2010 at 3:47pm.

how do i calculate a ratio of oxidised to reduced cytochrome c Fe2+ to Fe3+

given
E(mV) at 25 C and pH7 as 100
and absorbance at 550nm as 1.5

E is relative to standard hydrogen electrode

i dont know how im supposed to calculate it from this data

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