Solution :-
Total pressure = 770 mmHg
partial pressure of CO2 = 133 mmHg
partial pressure of Ar = 233 mmHg
partial pressure of O2 = 183 mmHg
partial pressure of He= ?
Total pressure is the sum of the partial pressure of the all
gases in the mixture
therefore
parital pressure of the He = total pressure - ( P CO2 + P Ar + P
O2)
                                       Â
= 770 mmHg - ( 133 mmHg + 233 mmHg + 183 mmHg)
                                       Â
= 221 mmHg
Therefore the parital pressure of the He = 221
mmHg
