2. For analysis, nitric acid was taken in an ampoule, the mass of HNO3 was 0.9654 g. The ampoule was broken in water, 50.00 ml of 0.8914 M NaOH solution was added to the resulting solution. The alkali excess was titrated with 35.20 ml of HCl solution (THCl = 0.03550 g/ml). Calculate percentage of N2O5

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