124. Solving a chemistry problem
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124. Solving a chemistry problem
5. Calcium was isolated from a limestone sample of 0.3864 g in the form of CaC2O4. Calcium oxalate was dissolved in sulfuric acid and 45 cm3 of KMnO4 solution was titrated with TKMnO4/CaCO3 = 0.0074 g/cm3. How much CaCO3 (%) is contained in limestone?
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