21. Solution to Chemistry Problem
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21. Solution to Chemistry Problem
42. A 0.5000 g sample of calcium carbonate was dissolved in 25.00 ml of 0.5100 N hydrochloric acid solution. The excess acid was titrated with 6.50 ml of 0.4900 M NaOH solution. Calculate the percentage of calcium carbonate CaCO3 in the sample.
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