Question

Copper -64 emits B-particle. The half life is 12.8 hr. At the time you received a sample of this radioactive isotope it had a certain initial activity (disintegrations/min). To do the experiment you have in mind, you have calculated that activity must not go below 2% of the initial value. How much time do you have to complete your experiment? ​

Answer 1

Answer:

0.206 sample for this.

Explanation:

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Answer 2

Answer:

T =12.8hr = 768 mins

Calculated activity should not go beyond = 2%

Time left = 2/768

= 364 mins

Therefore we have 364 mins left,

364mins = 6.067 hrs