A mixture of He , He, Ne , Ne, and Ar Ar has a pressure of 18.8 atm 18.8 atm at 28.0 °C. If the partial pressure of He He is 2.94 atm 2.94 atm and the partial pressure of Ar Ar is 4.27 atm, 4.27 atm, what is the partial pressure of Ne ? Ne?

Partial pressure Ne → 11.95 atm

Explanation:

If we state Dalton's law, the sum of partial pressure of each gas, in a mixture of gases, is the total pressure from the mixture:

Gases from the mixture are: He, Ne and Ar

Partial pressure Ar: 4.27 atm

Partial pressre He: 2.94 atm

Partial pressure Ne: ?

Total pressure = 18.8 atm

Partial pressure Ar + Partial pressure He + Partial pressure Ne = 18.8 atm

4.27 atm + 2.94 atm + Partial pressure Ne = 18.8 atm

Partial pressure Ne = 18.8 atm - 4.27 atm - 2.64 atm → 11.95 atm

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