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cyclopentadiene decomposes via a first order reaction as shown below. cyclopentadiene   → pent-4-ene-1-yne After a period...

cyclopentadiene decomposes via a first order reaction as shown below.
cyclopentadiene   → pent-4-ene-1-yne
After a period of 1.26 hours, 67.9 % of cyclopentadiene remained unchanged.

1. Determine the rate constant (k) for this reaction (in /hr). Report your answer to three significant figures.

2. Determine the half-life (t1/2) for this reaction (in hr). Report your answer to three significant figures.

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