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Asked by Uzma Amin

The t1/2 for a first order rxn is 20 s.the time required for 99.9 percent decomposition is
7 years ago

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Answered by DrBob222
What's k? k = 0.693/t<sub>1/2</sub>
Then ln(No/N) = kt
No = 100
N = 0.1
k from above
Solve for t in seconds.
7 years ago
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