Mole Fraction Video Lessons

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Problem: Calculate the mass percentage of oxygen in dry air.Express your answer with the appropriate units.Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses.

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Problem Details

Calculate the mass percentage of oxygen in dry air.

Express your answer with the appropriate units.


Air is a mixture of several gases. The 10 most abundant of these gases are listed here along with their mole fractions and molar masses.

Frequently Asked Questions

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 Mole Fraction concept. You can view video lessons to learn Mole Fraction. Or if you need more Mole Fraction practice, you can also practice Mole Fraction practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Parnis' class at Trent University.