Nitrogen dioxide decomposes at 300°C via a second-order process to produce nitrogen monoxide and oxygen according to the following chemical equation. 2 NO2(g) → 2 NO(g) + O2(g). A sample of NO2(g) is initially placed in a 2.50-L reaction vessel at 300°C. If the half-life and the rate constant at 300°C are 44 seconds and 0.54 M-1 s-1, respectively, how many moles of NO2 were in the original sample? Group of answer choices 0.042 mol 0.11 mol 24 mol 59 mol

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Nitrogen dioxide decomposes at 300°C via a second-order process to produce nitrogen monoxide and oxygen according to the following chemical equation.

2 NO2(g) → 2 NO(g) + O2(g).

A sample of NO2(g) is initially placed in a 2.50-L reaction vessel at 300°C. If the half-life and the rate constant at 300°C are 44 seconds and 0.54 M-1 s-1, respectively, how many moles of NO2 were in the original sample?
Group of answer choices

0.042 mol

0.11 mol

24 mol

59 mol

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