At 400 K, the half-life for the decomposition of a sample of a gaseous compound initially at a partial pressure of 55.5 kPa was 340 s. When the partial pressure was 28.9 kPa, the half-life was 178 s. Identify the order of the reaction.

Chemistry: The Molecular Science
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Author:John W. Moore, Conrad L. Stanitski
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Chapter11: Chemical Kinetics: Rates Of Reactions
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At 400 K, the half-life for the decomposition of a sample of a gaseous compound initially at a partial pressure of 55.5 kPa was 340 s. When the partial pressure was 28.9 kPa, the half-life was 178 s. Identify the order of the reaction.

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