99. Solving a chemistry problem

99. Solving a chemistry problem

15. When studying the kinetics of a first-order reaction, the following data were obtained to construct the kinetic curve of the starting substance:
Time, min 0 3 5 7 12 20 30
Concentration A, mol/m3 90.00 43.81 27.11 16.77 5.05 0.74 0.07

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