A substance undergoes first-order decomposition. After 45 min at 500°C, only 12.5% of the original sample remains. What is the half-life of the decomposition? Round your answer to 2 decimal places.

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Q: A substance undergoes first-order decomposition. After 45 min at 500°C, only 12.5% of the original…

A: A substance undergoes first order reaction.  Time = 45 min  Temperature = 500 °C  Original sample…

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Q: A substance undergoes first-order decomposition. After 28 min at 500°C, only 12.5% of the original…

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A: Givent1/2 = 1570 sOrder of reaction = 1k * t1/2 = 0.693k = 0.693t1/2k = 0.6931570 sk = 4.415 * 10-4…

Q: half-life of the decomposition

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Q: half-life

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A: Half-life of a material is the time taken to decay half of the amount of that material.