The partial pressure of helium, He in the tank, given that the tank contains 1.47 mole of O₂ and 5.53 moles of He, is 9.559 atm
To calculate the partial pressure of He in the tank, we must first obtain the mole fraction of He. Details on how to obtain the mole fraction of He is shown below:
Mole fraction of He = Mole of He / total mole
Mole fraction of He = 5.53 / 7
Mole fraction of He = 0.79
Now, we can obtain the partial pressure of He. This is illustrated below:
Partial pressure = mole fraction × total pressure
Partial pressure of He = 0.79 × 12.1
Partial pressure of He = 9.559 atm
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