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  1. M

    B How long will it take to reach 1000ppm CO2 from 2000ppm

    Thanks for the response! What is dt? is it delta time? and what is p(t)? A human adds 5000ppm co2 in one hour. So me being alone will add that to the room I dont know, there is no constant rate to this because the fresh air is being mixed in with the inside air, and that mixture is being...
  2. M

    B How long will it take to reach 1000ppm CO2 from 2000ppm

    would this be a quadradic equation since its dealing with half life? I think in 500/50 = 10 minutes, the fan would have brought 500 CF of fresh air, but the out fan would have been taking out the same amount of air which includes the fresh air, so at 10 minutes, it should have less then half the...
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