NH31/2 N2 + 3/2 H2 is zero order in NH3. In one experiment, when the initial concentration of NH3 was 1.24×10-2 M, the concentration of NH3 dropped to 3.08×10-3 M after 1.92×103 seconds had passed. Based on these data, the rate constant for the reaction is _________M s-1.

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