If a sample of Br-78 with an amount of 200. mg decays to an ampount of...

Question

Question

If a sample of Br-78 with an amount of 200. mg decays to an ampount of 25.0 mg in 21.0 min, what is its half-life?

Answer 1

Answer #1

Initial amount of Br-78 = 200 mg : - amount left after time (21 min) = 2500mg decay follows the fiest order kinetics. using t

Answer 2

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