74. Solving a chemistry problem
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74. Solving a chemistry problem
2. In three parallel samples of a solution containing a mixture of NaOH and Na2CO3, according to the results of their titration with an HCl solution, the total alkalinity was calculated, which is: 0.3100; 0.3075; 0.3095 g Na2O. Determine the boundaries of the confidence interval of the average value of the mass of Na2O and the magnitude of the relative error in measuring the mass of Na2O at a confidence level p = 0.95
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