Problem: Enter your answer in the provided box. A first-order decomposition reaction has a rate constant of 0.0032 yr-1. How long does it take for [reactant] to reach 12.5% of its original value? Be sure to report your answer to the correct number of significant figures.

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Enter your answer in the provided box. 

A first-order decomposition reaction has a rate constant of 0.0032 yr-1. How long does it take for [reactant] to reach 12.5% of its original value? Be sure to report your answer to the correct number of significant figures.

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