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17 November, 03:40

For the hypothetical reaction A → B, calculate the average rate of disappearance of A if the initial concentration of A is 0.91 M and the concentration of A after 90 minutes is 0.11 M.

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  1. 17 November, 03:49
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    The right answer is 8.9 x 10^-3 M/min

    Explanation:

    A → B

    -d [A]/dt = K [A]

    ΔA/Δt = - (C2 - C1) / t2 - t1

    = - (0.11 - 0.91) / 90

    = 8.9 x 10^-3 M/min
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