21. Solving a chemistry problem

21. Solving a chemistry problem

2. The rate of excretion of the drug Arbidol-LENS from the body is described by the kinetic equation of the first order reaction. The elimination time of 50% of the drug is 19 hours. One tablet contains 0.1 g of anhydrous substance. How often do you need to take the drug so that its amount in the body is maintained at a level not lower than 0.075 g?

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