6 Estim of oxygen nitrogen water vapour and other

Last updated: 6/30/2023

6 Estim of oxygen nitrogen water vapour and other constituents in a room of capacity 25 0 m at a temperature of 27 C and 1 atm pressure Solution Volume of the room V 25 0 m Temperature of the room T 27 C 300 K Pressure in the room P 1 atm 1 x 1 013 x 105 Pa The ideal gas equation relating pressure P Volume V and absolute temperature T can be written as PV KBNT Where KB is Boltzmann constant 1 38 x 10 23 m kg s K 1 N is the number of air molecules in the room Therefore N PV KBT 1 013 x 105 x 25 1 38 x 10 23 x 300 We get 6 11 x 1026 molecules Hence the total number of air molecules in the given room is 6 11 x 1026