83. Solving a chemistry problem

83. Solving a chemistry problem

34. A portion of a pure penicillin containing 14C with an activity of 4200 imp/min·mg was added to the test sample. From the mixture, it was possible to isolate a part of pure crystalline penicillin, the specific activity of which is Ax. Calculate the content of penicillin in the original sample (g) according to the following data:
Sample 1 2 3 4 5
a, mg 10.0 12.0 14.0 16.0 18.0
Ah, imp/min*mg 405 354 312 277 252

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