Question

A mixture of three noble gases has a total pressure of 1.25 atm. The individual pressures exerted by neon and argon are 0.68 atm and 0.35 atm, respectively. What is the partial pressure of the third gas, helium?

Use mc031-1.jpg.

Answer 1

a. 0.22 atm

Step-by-step explanation:

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Answer 2

The partial pressure of the third gas (Helium) is 0.22 atm

calculation

Total pressure= partial pressure for neon + partial pressure for argon + partial pressure for helium

partial pressure for neon= 0.68 atm

partial pressure for argon = 0.35 atm

partial pressure for helium = ? atm

make the partial pressure of helium the subject of the formula

Partial pressure of Helium= total pressure - ( partial pressure of neon +partial pressure for Helium )

= 1.25 atm - (0.68 +0.35 ) =0.22 atm