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NH3 →1/2 N2 + 3/2 H2 the following data were obtained:

NH3 →1/2 N2 + 3/2 H2

the following data were obtained:

[NH3], M1.67×10-38.35×10-44.18×10-42.09×10-4
seconds010001.50×1031.75×103



Hint: It is not necessary to graph these data.

(1)
The observed half life for this reaction when the starting concentration is 1.67×10-3 M iss and when the starting concentration is8.35×10-4 M is ________s.

(2)
The average rate of disappearance ofNH3 from t = 0 s to t = 1000 s is ______Ms-1.

(3)
The average rate of disappearance ofNH3 from t = 1000s to t = 1.50×103s is _______Ms-1.

(4)
Based on these data, the rate constant for this _______zerofirstsecond order reaction is ________M s-1.

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