1. A student performed this experiment and obtained the following concentration values: 0.02813 M, 0.02802, and 0.02788 M a. what is the mean concentration? b. what is the standard deviation of these results?
1. A student performed this experiment and obtained the following concentration values: 0.02813 M, 0.02802, and 0.02788 M a. what is the mean concentration? b. what is the standard deviation of these results?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter1: The Nature Of Chemistry
Section: Chapter Questions
Problem 9QRT: Which of these statements are qualitative? Which are quantitative? Explain your choice in each case....
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1. A student performed this experiment and obtained the following concentration values: 0.02813 M, 0.02802, and 0.02788 M
a. what is the mean concentration?
b. what is the standard deviation of these results?
3. how would the following errors affect the concentration of Cl- obtained in question 2b? give your reasoning in each case.
a. the student read the molarity of AgNo3 as 0.02104M instead of 0.02014M
b. the student was past the endpoint of titration when he took the final buret reading.
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