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5.00 mL of .00400 M Fe3+ and 5.00 mL of .00400 M SCN- are mixed and...

5.00 mL of .00400 M Fe3+ and 5.00 mL of .00400 M SCN- are mixed and an absorbance of 1.987 is obtained. Calculate the equilibrium constant to 3 significant figures. Є =2900

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