The total number of air molecules (inclusive of oxygen ,nitrogen ,water vapour and other contituents)in a room of capacity 20 m^(3) at a temerature of 27^(@)C and 1 atm pressure.

The total number of air molecules (inclusive of oxygen ,nitrogen ,wate

1.	The total number of air molecules (inclusive of oxygen ,nitrogen ,water vapour and other contituents)in a room of capacity 20 m^(3) at a temerature of 27^(@)C and 1 atm pressure.
Answer» Solution :Givne data VOLUME `(V)=20m^(3)` Temperature `(T)=27+273=300K` Pressure (P) =1 atm `=1.01 XX 10^(5)PA` TOTAL NUMBER of air molecules `N=(PV)/(KT)` `=(1.02xx 10^(5) xx 20)/(1.38 xx 10^(-23) xx 300)=4.87 xx 10^(26)`