Part A

From the following data for the first$-$order gas$-$

phase isomerization of $C{H}_{3}NC$ at $215C,$

calculate the first$-$order rate constant and half$-$life

for the reaction:

Calculate the first$-$order rate constant.

Express your answer using three significant figures.

$k=$

$s^{-1}$

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Part B

Calculate the half$-$life.

Express your answer using three significant figures.

$t_{\frac{1}{2}}=$

s