t 518oC, the rate of decomposition of gaseous acetaldehyde, initially at a pressure of 363 Torr, was 1.07 Torr s-1 when 5.0 percent had reacted and 0.76 Torr s-1 when 20.0 percent had reacted. Determine the order of the reaction. [2] The answer is in the bracket. Thank you!

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