The reaction A(aq) → B(aq) is a first order reaction with respect to A(aq). The concentration of A(aq) after 100.0 seconds of reaction is 0.938 M and the concentration of A(aq) after 400.0 seconds of reaction is 0.735 M. What will be the concentration of A(aq) after 878.0 seconds of reaction?

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