Hello, help me. Please.
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In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a chemical formula. The informal use of the term formula in science refers to the general construct of a relationship between given quantities. ... In all cases, however, formulas form the basis for calculations.
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The oxidation number of iron changes from +3 to +2. Hence, FeCl3 is reduced and acts as oxidizing agent.
The oxidation number of S changes from -2 to 0. Hence, H2S is oxidized and acts as reducing agent. Thus, only option A is correct.
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