36. Solving a chemistry problem
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22. Zinc oxide was dissolved in a volumetric flask with a capacity of 100 cm3. To 10.00 cm3 of the resulting solution was added 50.00 cm3 of a sulfuric acid solution, Т(Н2SO4) = 0.004904 g/cm3. 9.25 cm3 of sodium hydroxide was used for back titration, Т(NaOH)=0.004404 g/cm3. Calculate the weight of the zinc oxide sample.
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