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Iron (II) ions catalyze the oxidation of luminal. The intensity of the resulting chemiluminescence has been shown to increase linearly with iron(II) concentration from 10-10 to 10-8 M. Exactly 1.00 ml of water was added to a 2.00 ml aliquot of an unknown Fe(II) solution, followed by 2.00 ml of a dilute H2O2 solution and 1.00 ml of an alkaline solution of luminol. The chemiluminescent signal from the mixture was integrated over a 10.0 s period and found to be 16.1. To a second 2.00 ml aliquot of the sample was added 1.00 ml of a 5.15 x 10-5 M Fe(II) solution followed by the same volume of H2O2 and luminol. The integrated intensity was 29.6. Calculate the Fe(II) molarity of the sample.

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