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The reduction of iron(III) oxide () to pure iron during the first step of steelmaking, is driven by the high-temperature combustion of coke, a purified form of coal: Suppose at the temperature of a blast furnace the Gibbs free energies of formation of and are and , respectively. Calculate the minimum mass of coke needed to produce of pure iron. Round your answer to significant digits.
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The reduction of iron(III) oxide () to pure iron during the first step of steelmaking, is driven by...
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