The rate of decay of a radioactive substance is proportional to the amount of substance present. What is the half-life of a radioactive substance if it takes 12 years for one-third of the substance to decay?
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Step 1: Since the rate of decay is proportional to the amount of substance present, we can use the exponential decay formula: A(t) = A0 * e^(-kt), where A(t) is the amount of substance at time t, A0 is the initial amount of substance, k is the decay constant, and Show more…
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