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Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of life. The coupled reactions are 1. luciferin + O2 ⇌ oxyluciferin + light 2. ATP ⇌ AMP + PPi ΔG° = -31.6 kJ/mol If the overall ΔG° of the coupled reactions is -5.00 kJ/mol, what is the equilibrium constant, K, of the first reaction at 30 °C? Express your answer numerically.