Seoyeon needs to prepare a 250 mL solution of 0.1000 M Na2CO3. Which glassware should she use to prepare the solution? 250-mL volumetric flask 250-mL graduated cylinder 250-mL Erlenmeyer flask 250-mL beaker

Seoyeon needs to prepare a 250 mL solution of 0.1000 M Na2CO3. Which glassware should she use to prepare the solution? 250-mL volumetric flask 250-mL graduated cylinder 250-mL Erlenmeyer flask 250-mL beaker

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter7: Statistical Data Treatment And Evaluation

Section: Chapter Questions

Problem 7.16QAP

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Question

Seoyeon needs to prepare a 250 mL solution of 0.1000 M Na₂CO₃. Which glassware should she use to prepare the solution?

250-mL volumetric flask
250-mL graduated cylinder
250-mL Erlenmeyer flask
250-mL beaker

For the given data set: [6.7, 7.3, 7.5, 7.2, 7.9, and 7.1] Determine the outlier using Grubbs test. G_crit= 1.887

6.7
7.9
7.3
7.1
There is no outlier.

The results of an analysis for a certain sample are given (in ppm): 20.1, 24.1, 23.5, 22.2, and 21.6. Calculate the 95% confidence interval.

20.3 ppm ≤ x̄ ≤ 24.3 ppm
20.5 ppm ≤ x̄ ≤ 24.1 ppm
20.8 ppm ≤ x̄ ≤ 24.8 ppm
21.0 ppm ≤ x̄ ≤ 24.6 ppm

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