3. A vitamin C tablet was dissolved in a 100 ml flask and 10 ml of the resulting solution was placed in a cell. Ascorbic acid was titrated with electrically generated bromine (C6H8O6 Br → C6H6O6 2Br- 2H). How much ascorbic acid is contained in the tablet (g) if the titration took 3 min 21 s at a current of 70.2 mA?

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