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Need help with a chemistry problem using the Avogadro constant.I can't figure out how to do the math calculations.

Need help with a chemistry problem using the Avogadro constant.I can't figure out how to do the math calculations.

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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Need help with a chemistry problem using the Avogadro constant.I can't figure out how to do the math calculations.

Choose a hazardous air contaminant (CO, NO2, 03 or So2) Determine the appropriate Air Quality Standard for your contaminant. Indicate which standard you are using, which dictates the level and averaging time. Determine the volume of air and corresponding number of molecules of air in each breath 1. 2. and 24 hours. 3. Determine the maximum number of oxygen atoms due to your contaminant that you could be exposed (pure oxygen and other pollutants should be considered separately) Note: the various standards are based upon how the contaminants are measured and should not be factored into your 24 hour concentration. Selected air quality standard a. Sulfur Dioxide (SO2) – Primary standard at 75 ppb per 1 hour 1. 2. Volume and molecules a. Volume of air breathed in each breath = .5 liter b. Molecules of air in each breath = 2.82x1021 i. Molecules calculated by dividing 25,920 (breaths in a day) by 7.31x1025 (molecules breathed in 24 hours) c. Volume of air breathed in 24 hours = 12,960 liters d. Molecules of air breathed in 24 hours (we did this in lecture) = 7.31x1025 Maximum contaminant exposure – not sure how to use the Avogadro constant to solve this) a. SO2: 75 ppb or 0.0075% of air breathed in over the course of 1 hour 3.
Transcribed Image Text:Choose a hazardous air contaminant (CO, NO2, 03 or So2) Determine the appropriate Air Quality Standard for your contaminant. Indicate which standard you are using, which dictates the level and averaging time. Determine the volume of air and corresponding number of molecules of air in each breath 1. 2. and 24 hours. 3. Determine the maximum number of oxygen atoms due to your contaminant that you could be exposed (pure oxygen and other pollutants should be considered separately) Note: the various standards are based upon how the contaminants are measured and should not be factored into your 24 hour concentration. Selected air quality standard a. Sulfur Dioxide (SO2) – Primary standard at 75 ppb per 1 hour 1. 2. Volume and molecules a. Volume of air breathed in each breath = .5 liter b. Molecules of air in each breath = 2.82x1021 i. Molecules calculated by dividing 25,920 (breaths in a day) by 7.31x1025 (molecules breathed in 24 hours) c. Volume of air breathed in 24 hours = 12,960 liters d. Molecules of air breathed in 24 hours (we did this in lecture) = 7.31x1025 Maximum contaminant exposure – not sure how to use the Avogadro constant to solve this) a. SO2: 75 ppb or 0.0075% of air breathed in over the course of 1 hour 3.
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