Problem: You have an evacuated container of fixed volume and known mass and introduce a known mass of a gas sample. Measuring the pressure at constant temperature over time, you are surprised to see it slowly dropping. You measure the mass of the gas-filled container and find that the mass is what it should be--gas plus container--and the mass does not change over time, so you do not have a leak.Suggest an explanation for your observations.

FREE Expert Solution

Overtime some of the gas molecules will collide and condense into a liquid, while some gas molecules will combine together into larger gas molecules. This decreases the number of moles of gas.

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Problem Details

You have an evacuated container of fixed volume and known mass and introduce a known mass of a gas sample. Measuring the pressure at constant temperature over time, you are surprised to see it slowly dropping. You measure the mass of the gas-filled container and find that the mass is what it should be--gas plus container--and the mass does not change over time, so you do not have a leak.

Suggest an explanation for your observations.

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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 Molecular Theory concept. You can view video lessons to learn Kinetic Molecular Theory. Or if you need more Kinetic Molecular Theory practice, you can also practice Kinetic Molecular Theory practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hilty's class at TAMU.