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Question: a human exposure calculation question...

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2. Human Exposure (10 Points) The 1-hour standard for NO2 from the NAAQS is 100 ppb NO2. Each breath you take is approximately 1 L of air. Assuming the air you breathe is at the 1 hour standard limit for NO2: a. How many grams of NO2 do you take in with each breath? b. How many molecules of NO2 do you take in with each breath? Use formula found in the front cover of APCE to convert: (assume the air is 25 C and 1 atm)

A human exposure calculation question

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