P 1 * V 1 / T 1 = P2 * V2 / T2 is (P =Pressure, V = Volume, T =Temperature)
•  Ideal gas law.
•  Charles' law.
•  Boyle's law.

lj2020 asking:
•  Is this not the combined gas law?? Charles law, Boyles law and Guy Luccas law.

The ideal gas law is PV = nRT

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