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In: Civil Engineering

Workers in a 1000 m3 processing room in a plastics factory are exposed to vinyl chloride...

Workers in a 1000 m3 processing room in a plastics factory are exposed to vinyl chloride (C2H3Cl) gas, which is emitted when the plastic pellets are heated to make the final products.

a. If the source strength of C2H3Cl is 80 mg/h and the air change rate in the room is 0.21/h, what is the steady state concentration of C2H3Cl (in mg/m3 and in ppmv) in the room at 25⁰C and 1 atm? Assume that C2H3Cl is conservative and that the concentration of the gas in the ambient air is zero.

b. What is the concentration (in ppmv) in the same room 6 hours after all the machines are turned off at the end of the day?

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