Gas laws simulator: Boyle's and Charles's law

Hold temperature, pressure or volume steady and see how the other two are linked, with Boyle's law isotherms and Charles's law traced back to absolute zero.

Works in metric or imperial units.

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Questions students ask

What is Boyle's law?

At constant temperature, the pressure of a fixed mass of gas is inversely proportional to its volume: PV is constant.

Why does Charles's law point to −273 °C?

Volume is proportional to temperature in kelvin, so the line extended reaches zero volume at 0 K, which is −273 °C.

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