Question: Consider a first order reaction A--> B with a half life of 65.5 min. a) If the concentration of A is 78.0 mM at time=

Consider a first order reaction A--> B with a half life of 65.5 min. a) If the concentration of A is 78.0 mM at time= 0, how long will it take to drop to 2.5mM? b) What will the concentration of A be after 90.0 min?

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