52. Solving a chemistry problem
2. Calculate the mass fraction of aluminum oxide (Al2O3) in silicate, if a sample of it weighing 1.020 g was transferred into a solution, 25.00 ml of a 0.2150 M EDTA solution were added. The EDTA residue was titrated with 9.70 ml of 0.1025 M zinc sulfate solution (ZnSO4).
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