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    Concentration of a reactant after a set number of half lives.

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    A first order reaction has a half-life of 1.34 x 10^-3 hours. If the initial concentration of the reactant is 8.00M, what is its concentration after 4 half-lives?

    a. 4.00M
    b. 2.00M
    c. 1.00M
    d. 0.50M
    e. 0.25M

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    Solution Preview

    After the 1st half life the concentration will be halved, which means it will go from 8 to 4M. After another half life the new concentration (now ...

    Solution Summary

    The concentration of a reactant after a set number of half lives are determined. The solution answers the multiple choice question with an explanation of 100-150 words.