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At 518 C, the half-life for the decomposition of a sample of gaseous Acetaldehyde (Ethanal), initially...

At 518 C, the half-life for the decomposition of a sample of gaseous Acetaldehyde
(Ethanal), initially at a pressure of 363 Torr, was 410 s. When the pressure was initially 169
Torr, the half–life was 880 s. Determine the order of the reaction.

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