In the first-order,reaction A → products,[A] = 0.400 M initially and 0.250 M after 15.0 min,what is the value of the rate constant,k?

Question

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For a first-order reaction, the rate constant k can be calculated using the formula: k = (1/t) * ln([A]₀/[A]), where [A]₀ is the initial concentration and [A] is the concentration at time t. Substituting the given values: k = (1/15.0 min) * ln(0.400/0.250) = 0.0313 min⁻¹.

In the First-Order,reaction a → Products,[A] = 0