We’re being asked to calculate the fraction of the reactant remaining after 4 half-lives
Recall that half-life is the time needed for the amount of a reactant to decrease by 50% or one-half. One way to determine the amount remaining after x half-lives is:
The half-life of a first order reaction is given by:
After four half-life periods for a first-order reaction, what fraction of reactant remains?
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