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A substance 'A' undergoes a reaction suc...

A substance 'A' undergoes a reaction such that its concentration at anytime t (in sec.) can be represented by the equation `[A]_(t)^(4) = (1)/(t+1)` where 't' is time in sec and `[A_(t)]` represents molar concentration. Calculate rate of disappearance of 'A' at concentration of 2M.

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