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1.380g of an iron salt was dissolved in 25.00mL of distilled water. The solution was titrated against 0.100M Na2Cr2O7 and the titr e was 12.78mL Using the half - reaction below, Cr2O7(-2) + 14H(+) + 6e(-) ---> 2Cr(3+) + 7H2O what was the formula of the iron salt? the answer is iron nitrate...