Problem: A 100.-L flask contains a mixture of methane (CH4) and argon gases at 25°C. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. Calculate the total kinetic energy of the gaseous mixture.

FREE Expert Solution

Recall: The total kinetic energy of an ideal gas is given by:

where n = total moles of gas, R = universal gas constant (8.314 J/mol K), T = temperature.

Assuming that methane and argon behave ideally in the mixture, this means that we just need to determine the total moles of gases present.

The molar mass of argon is 39.95 g/mol. The moles of Ar present in the mixture is:

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Problem Details

A 100.-L flask contains a mixture of methane (CH4) and argon gases at 25°C. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. Calculate the total kinetic energy of the gaseous mixture.

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Kinetic Energy of Gases concept. If you need more Kinetic Energy of Gases practice, you can also practice Kinetic Energy of Gases practice problems.

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Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.