8. The gas reaction of decomposition of acetone CH3COCH3=C2H4 H2CO proceeds in the system. Rate constant 0.026 min-1. The initial pressure in the system is 92000 Pa (there are no reaction products at the initial moment). Necessary:
1) Determine the order of the reaction and give the integral equation of the reaction of a given order;
2) convert the integral equation to a form that includes the total pressure in the system;
3) obtain the dependence of the total pressure in the system on time and calculate the total pressure in the system after 45 minutes.

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