8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm

The correct answer is Option D.

Explanation:

To calculate the pressure of the Helium gas, we use the equation:

where,

= partial pressure of the gas

= mole fraction of the gas

P = total pressure

We are given:

Sum of all the mole fraction is always equal to 1.

Putting values in above equation, we get:

Hence, the correct answer is Option D.

yes definetly because you are using energy

the answer is definitely c.