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A mixture of methane and helium is placed in a 2.0 L flask at 27ºC. The partial pressure of CH4 is 0.72 atm, and the partial pressure of helium is 22.3 kPa. What is the total pressure of the flask in kPa?

Answer :

Final answer:

The total pressure of the flask, when a mixture of methane and helium is present, is 95.29 kPa.

Explanation:

To find the total pressure of the flask, we need to convert the partial pressures of methane and helium to the same unit of pressure. Since the partial pressure of methane is given in atm and the partial pressure of helium is given in kPa, we need to convert the partial pressure of methane to kPa. 1 atm is equal to 101.325 kPa, so the partial pressure of methane is 0.72 atm * 101.325 kPa/atm = 72.99 kPa.

To find the total pressure, we simply add the partial pressures of methane and helium together: 72.99 kPa + 22.3 kPa = 95.29 kPa.

Therefore, the total pressure of the flask is 95.29 kPa.

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