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Reactant Concentration and Time

CHEM-3@MFCK

Consider the reaction $A \rightarrow \text{products}$. The reaction half-life is 15.0 min, and this value is independent of the concentration of A.

If the initial concentration of A is 0.125 M, what is the concentration of A after 12.0 min?

A

0.0718 M

B

0.0462 M

C

0.574 M

D

0.0693 M