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Helium has the lowest boiling point of the elements. The slightest change in temp can cause it to vaporize and expand. To prevent pressure explosions, a line from the tank has a "burst disk" in case a of sudden pressure increse. then the diaphragm would rupture and release the gas before pressure was too high. This is an example of which physics law? Charles? Boyle? Ideal? I think possibly Charles because as it warmed up due to the fire, the pressure expanded and it exploded. Temp increase, pressure increase. Does that make sense?

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    Charles law? Isn't that constant pressure?

    I am uncertain which of the events you are looking for a "law". When you say "this is an example" I wonder what "this" refers to. The rupturing of the disk? That has nothing to do with gas laws.

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