math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymi mathvariant=normalk/mi/math ...

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math xmlns=http://www.w3.org/1998/Math/MathML class=wrs_chemistrymi mathvariant=normalk/mi/math for a zero order reaction is \( 2 \times 10^{-2} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1} \). If the concentration of the reactant after \( 25 \mathrm{~s} \) in \( 0.5 \mathrm{M} \), the initial concentration must have been
(A) \( 0.5 \mathrm{M} \)
(B) \( 1.25 \mathrm{M} \)
(C) \( 12.5 \mathrm{M} \)
(D) \( 1.0 \mathrm{M} \)
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