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what is the difference between the combined gas law and the ideal gas law? are they the same thing?

  • chemistry -

    No, the are not the same.
    The Combined Gas Law is:
    P1V1/T1 = P2V2/T2
    The Ideal Gas Law is:
    PV = nRT
    Your chemistry textbook should explain the difference. The most importance difference is that in the Combined Gas Law, the amount (moles) of gas are assumed to be constant. In the Ideal Gas Law, the amount of gas is one of the variables.

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