The rate constant for a first-order reaction is \( 0.0693 \, \text{min}^{-1} \). What is the half-life of the reaction?
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For first-order reactions, the half-life is independent of the initial concentration and can be quickly calculated using \( t_{1/2} = \frac{\ln 2}{k} \). Memorize \( \ln 2 \approx 0.693 \) for efficiency.