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# Mole percent of methane

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An evacuated glass bulb has a mass of 27.9214 g. Filled with dry air (80% nitrogen gas, 20% oxygen gas by mass) at 1 atm and 25 degrees Celsius it has a mass of 28.0529 g. Filled with a mixture of methane and ethane it has a mass of 28.0140 g. What is the mole percent of methane in the mixture?

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#### Solution Preview

mole percent of methane

An evacuated glass bulb has a mass of 27.9214 g. Filled with dry air (80% nitrogen gas, 20% oxygen gas by mass) at 1 atm and 25 degrees Celsius it has a mass of 28.0529 g. Filled with a mixture of methane and ethane it has a mass of 28.0140 g. What is the mole percent of methane in the mixture?

Solution:

Mass of N¬2 and O2 in the flask = 28.0529 ...

#### Solution Summary

The mole percent of methane is examined in the mixture.

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