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What element is being oxidized in the following redox reaction? Fe 2+(aq) + NH4 +(aq) → Fe(s) + NO3 -(aq)? Is Engineering Saturated in the UK? A pair of dice are tossed. What is the probability that doubles are rolled, given that the sum on the two dice is less than 8? What are the first 3 digits of 2018^2018? How to solve problems below?