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A flask contains a 1.00 mole of neon gas and 2.00 moles of argon gas. If the total pressure of the gases is 150.0 kPa, then what is the partial pressure of the argon gas in kPa?

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Eduard22slyidn

Answer:

Partial pressure of Ar = 100.5 KPa

Explanation:

The following data were obtained from the question:

Number of mole of Ne = 1 mole

Number of mole of Ar = 2 moles

Total pressure = 150.0 KPa

Partial pressure of Ar =?

Next, we shall determine the mole fraction of Argon (Ar). This can be obtained as follow:

Number of mole of Ne = 1 mole

Number of mole of Ar = 2 moles

Total mole = 1 + 2 = 3 moles

Mole fraction of Ar = mole of Ar / total mole

Mole fraction of Ar = 2/3

Mole fraction of Ar = 0.67 mole

Finally, we shall determine the partial pressure of argon (Ar). This can be obtained as follow:

Mole fraction of Ar = 0.67 mole

Total pressure = 150.0 KPa

Partial pressure of Ar =?

Partial pressure = mole fraction of gas × total pressure

Partial pressure of Ar = 0.67 × 150

Partial pressure of Ar = 100.5 KPa

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