# Composition Determination

Hello, I have been given the following problem and am hoping for some help....

You have 1000 unlabeled gas cylinders, each are 0.25m3 and need to be able to identify the contents. They mostly contain oxygen and helium, but some contain xenon and uranium hexafluoride. You are given a scale, pressure gauge, unlimited water, bubble gum, duct tape, ice, firewood and matches. You are also given a "fugacity meter" and use of a thermodynamics textbook..

So, using just those items, how can you determine what the cylinders contain?

For bonus points, any use of the Maxwell relations are to be used.

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berkeman
Mentor
Hello, I have been given the following problem and am hoping for some help....

You have 1000 unlabeled gas cylinders, each are 0.25m3 and need to be able to identify the contents. They mostly contain oxygen and helium, but some contain xenon and uranium hexafluoride. You are given a scale, pressure gauge, unlimited water, bubble gum, duct tape, ice, firewood and matches. You are also given a "fugacity meter" and use of a thermodynamics textbook..

So, using just those items, how can you determine what the cylinders contain?

For bonus points, any use of the Maxwell relations are to be used.

Yoiks. It seems the scale is the most practical device...?

berkeman
Mentor
Hello, I have been given the following problem and am hoping for some help....

You have 1000 unlabeled gas cylinders, each are 0.25m3 and need to be able to identify the contents. They mostly contain oxygen and helium, but some contain xenon and uranium hexafluoride. You are given a scale, pressure gauge, unlimited water, bubble gum, duct tape, ice, firewood and matches. You are also given a "fugacity meter" and use of a thermodynamics textbook..

So, using just those items, how can you determine what the cylinders contain?

For bonus points, any use of the Maxwell relations are to be used.