Math Problem Statement
A specific radioactive substance follows a continuous exponential decay model. It has a half-life of 4 hours. At the start of the experiment, 89.8g is present. How much will be present in 21 hours? Do not round any intermediate computations, and round your answer to the nearest tenth.
Solution
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Math Problem Analysis
Mathematical Concepts
Exponential Decay
Half-life
Formulas
Exponential decay formula A(t) = A0 * e^(kt)
Decay constant formula k = ln(2) / t_half
Theorems
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Suitable Grade Level
Grades 11-12
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