47. Solving a chemistry problem
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30. Calculate the percentage of potassium in the test sample, if the activity of pure potassium chloride is 1800 imp/min, and the activities of the test samples (Ax) are as follows:
Samples 1 2 3 4 5
Ah, imp/min 220 398 798 616 480
Samples 1 2 3 4 5
Ah, imp/min 220 398 798 616 480
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