You go to a nightclub to hear a band. Smoking is allowed in the club. There are 600 people at the club, and one-third are smoking at any given time. Each cigarette emits 1.4 mg of formaldehyde, and each smoker averages 3 cigarettes per hour. Formaldehyde decays to carbon dioxide with a first order rate constant of 0.40 per hour. The room measures 20 m by 30 m by 5 m, and the ventilation rate is 2.5 air changes per hour. There are no smokers outside of the club. Assuming that you stay at the club until the steady state concentration is reached, what is the maximum formaldehyde concentration you will be exposed to? Is this concentration problematic? (Hint: Look up information at the Agency for Toxic Substances and Disease Registry to answer this question). Assuming the initial HCHO concentration is zero (before people arrive to see the band), how long does it take to reach 95% of the steady state concentration? show all work

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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      You go to a nightclub to hear a band. Smoking is allowed in the club. There are 600 people at the club, and one-third are smoking at any given time. Each cigarette emits 1.4 mg of formaldehyde, and each smoker averages 3 cigarettes per hour. Formaldehyde decays to carbon dioxide with a first order rate constant of 0.40 per hour. The room measures 20 m by 30 m by 5 m, and the ventilation rate is 2.5 air changes per hour. There are no smokers outside of the club.

  1. Assuming that you stay at the club until the steady state concentration is reached, what is the maximum formaldehyde concentration you will be exposed to?
  2. Is this concentration problematic? (Hint: Look up information at the Agency for Toxic Substances and Disease Registry to answer this question).
  3. Assuming the initial HCHO concentration is zero (before people arrive to see the band), how long does it take to reach 95% of the steady state concentration?

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