Consider two reaction vessels, one containing A and the other containing B, with equal concentrations at t = 0. If both substances decompose by first-order kinectics, where kA = 4.50 × 10-4 s-1 kB = 3.70 × 10-3 s-1 how much time must pass to reach a condition such that [A] = 4.00[B]?
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