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Let's say I am asked how to prepare 200 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution. My solution to the problem is as follows: C1 V1 = C2 V2 V1 = C2 V2 / C1 V1 = (0.9 M) (200 mL) / 5.01 M V1 = 35.9 mL Now I'm wondering how many significant figures my final answer should have. From what I know, I have to refer to the least significant measurement, which happens to have one significant figure (based on 0.9 M NaOH solution). Should my answer be 40 mL instead?

Let's say I am asked how to prepare 200 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution. My solution to the problem is as follows: C1 V1 = C2 V2 V1 = C2 V2 / C1 V1 = (0.9 M) (200 mL) / 5.01 M V1 = 35.9 mL Now I'm wondering how many significant figures my final answer should have. From what I know, I have to refer to the least significant measurement, which happens to have one significant figure (based on 0.9 M NaOH solution). Should my answer be 40 mL instead?

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter1: Basic Concepts Of Chemistry
Section: Chapter Questions
Problem 49RGQ: Fluoridation of city water supplies has been practiced in the United States for several decades. It...
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Let's say I am asked how to prepare 200 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution. My solution to the problem is as follows:

C1 V1 = C2 V2
V1 = C2 V2 / C1
V1 = (0.9 M) (200 mL) / 5.01 M
V1 = 35.9 mL

Now I'm wondering how many significant figures my final answer should have. From what I know, I have to refer to the least significant measurement, which happens to have one significant figure (based on 0.9 M NaOH solution). Should my answer be 40 mL instead?

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