Answer :
The partial pressure of helium gas is 162.24 ATM, and it is utilized in the gas mixture Heliox to assist patients with breathing.
A helium and oxygen gas mixture called Heliox is given to people who have trouble breathing. Using it for scuba diving is another usage. The overall pressure requirement is 4.2 atm. Dalton's Law of Partial Pressures states that since heliox is a mixture of only two gases—helium and oxygen—the total pressure in the tank must be equal to the sum of the partial pressures of the two gases. 20% oxygen and 80% helium make up heliox. A breathing gas called heliox is made up of helium (He) and oxygen (O2). It is used as a medicinal treatment for those who have respiratory problems.
Total pressure in Heloix =[tex]po= 208 atom[/tex]
Mole fraction of oxygen =[tex]x0=0.22[/tex]
Mole fraction of helium =[tex]xhc=1- xo=1-0.22=0.78[/tex]
According Dalton's law of partial pressure.
partial pressure of oxygen gas in Heloix:[tex]p0 * x0=208 atom *0.22=45.76 atom[/tex]
Partial pressure of helium gas in Heloix:
[tex]phc=po &xhc=208 atom *0.78=162.24 atm[/tex]
Partial pressure of helium gas is 162.24 atm.
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