Person breathes out at the rate 0.3 L/min = for 6 person expels
The concentration of CO2 is 400 ppm and it has to maintain upto 1000 ppm.
AT STP volume of CO2 is 22.4 L which is equal to 1 mole = 44 g
so mass of CO2 expells out = /s
400ppm means 400 g of CO2 present in 1000000 particles of air
concentration of incoming air =
six person breaths out =
s per the standards