FeO(s) + CO(g) = Fe(s) + CO2(g); K = 0.435 at 1173 K. At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173K?
A. 1
B. 1.3
C. 2.3
D. 3.3
Answer: Option D
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C. Both A and B
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