Answer : The partial pressure of both oxygen and nitrogen is, 61.8 atm and 117.8 atm respectively.
Explanation :
First we have to calculate the moles of
and


and,

Now we have to calculate the mole fraction of
and



and,


Now we have to calculate the partial pressure of both oxygen and nitrogen.
According to the Raoult's law,

where,
= partial pressure of gas
= total pressure of gas = 179.6 atm
= mole fraction of gas


and,


Thus, the partial pressure of both oxygen and nitrogen is, 61.8 atm and 117.8 atm respectively.