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How many electrons are transferred in the half-reaction H2AlO3− (aq) + H2­O (l) → Al (s) + 4 OH– (aq)?     3 electrons are lost by Al     1 electron is gained by O     1 electron is lost by O     3 electrons are gained by Al

How many electrons are transferred in the half-reaction H2AlO3− (aq) + H2­O (l) → Al (s) + 4 OH– (aq)?     3 electrons are lost by Al     1 electron is gained by O     1 electron is lost by O     3 electrons are gained by Al

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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How many electrons are transferred in the half-reaction H2AlO3− (aq) + H2­O (l) → Al (s) + 4 OH– (aq)?

   

3 electrons are lost by Al
   

1 electron is gained by O
   

1 electron is lost by O
   

3 electrons are gained by Al
Measuring the amount of fluoride in five samples of toothpaste gave the following results: 0.77, 0.46, 0.56, 0.22, and 0.49 mg/sample. The average amount of fluorine for these samples is 0.50 mg, with a standard deviation of 0.20 mg/sample. Can any data points be rejected at a 95% confidence level? Critical values for outlier tests (G) Gerit value Number of observations 4 1.463 1.672 1,822 1.938 5 7 Yes, 0.56 mg can be rejected as an outlier No, none of the values can be rejected. O Yes, 0.22 mg can be rejected as an outlier Yes, 0.77 mg can be rejected as an outlier
Transcribed Image Text:Measuring the amount of fluoride in five samples of toothpaste gave the following results: 0.77, 0.46, 0.56, 0.22, and 0.49 mg/sample. The average amount of fluorine for these samples is 0.50 mg, with a standard deviation of 0.20 mg/sample. Can any data points be rejected at a 95% confidence level? Critical values for outlier tests (G) Gerit value Number of observations 4 1.463 1.672 1,822 1.938 5 7 Yes, 0.56 mg can be rejected as an outlier No, none of the values can be rejected. O Yes, 0.22 mg can be rejected as an outlier Yes, 0.77 mg can be rejected as an outlier
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