A first order reaction takes math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn...

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A first order reaction takes math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymn40/mnmo /momimin/mi/math for \( 30 \% \) decomposition. Calculate \( \mathrm{t}_{1 / 2} \)
(A) \( 77.7 \mathrm{~min} \)
(B) \( 27.2 \mathrm{~min} \)
(C) \( 55.3 \mathrm{~min} \)
(D) \( 67.3 \mathrm{~min} \)
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