Question: Apparently, the answer is 637 mg per fluid ounce...but I keep getting 419.43 mg/fl. oz. Please help. 3-11. The concentration of active ingredient in a

Apparently, the answer is 637 mg per fluid ounce...but I keep getting 419.43 mg/fl. oz.

Please help.

3-11. The concentration of active ingredient in a product at 4 and 12 months after preparation was found to be 365 mg per fluid ounce and 120 mg per fluid ounce, respectively. If the product degrades according to first-order kinetics, calculate the concentration of active ingredient per fluid ounce at the time of preparation of the product

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