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I need to find the pressure of a substance after 65 s. I have the initial pressure, the order of the reaction, the Temp., and the rate k for the decomposition.

I know that if it was about concentrations, I would use

ln [A]t = k x t x ln [A]o

If it's about pressure, do I use the same formula? Or is there a separate one? (if there is one, I can't find it...)

Thank you,

Joanna.

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# Homework Help: Finding the P of a reactant after t seconds

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