82. Solving a chemistry problem

82. Solving a chemistry problem

2. Substance A was mixed in equal amounts with substances B and C (a=b=c=0.1 mol/l). After 1000 seconds, 50% A has reacted. Determine the concentration of substance A after 2000 seconds, if these substances interacted according to the reaction: 1) first order; 2) second order; 3) third order.

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