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If a 700 cfm fan is exhausting a 12ft. x 14 ft. x 10 ft. room, how long would it take to reduce the room

  1. If a 700 cfm fan is exhausting a 12ft. x 14 ft. x 10 ft. room, how long would it take to reduce the room concentration from 2,000 ppm to 1 ppm. Assume contaminant generation has stopped.

    18.2 min

    36.4 min

    0.7 min

    52 min

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