Н17 To 50.0 ml of potassium nitrite (density 1.38 g / m

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To 50.0 ml of potassium nitrite (density 1.38 g / ml) was added 20.0 ml of hydrogen peroxide with a concentration of 300 g / l and heated. Then the resulting solution was added a few grains of manganese (IV). The volume of gas released, was found to be 395 ml (NU). Calculate the mass fraction and the molar concentration of salt in the initial solution.


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