Answer:
Partial pressure of oxygen
atm
Partial pressure of Helium
atm
Explanation:
We will first find the number of moles of each gas
The molar mass of oxygen is
grams per mole
The molar mass of helium is
grams per mole
The number of moles of oxygen in the solution

The number of moles of helium in the solution
The number of moles of oxygen in the solution

Total number of moles in the solution is equal to
Partial pressure of oxygen
atm
atm
Partial pressure of Helium
atm
atm