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chemistry

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For the reaction A to products}, the following data were obtained: t=0 s, A}]=0.715 M; 22 s, 0.605 M; 74 s, 0.345 M; 132 s, 0.055 M.

What is the half-life of the reaction?

ive been posting this for awhile now...can someone just show me how to go about doing this problem? i have 3 sets of data...what am i supposed to do with it

  • chemistry -

    Do I use the t(1/2) = ln2 / K formula? In that case...would I just substitute any of the data that I want? Like t(1/2) = 0.715, ln2, then find k?

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