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5-If a sample of an Isotope with t1/2 = 1 hr. And an activity of 200...

5-If a sample of an Isotope with t1/2 = 1 hr. And an activity of 200 mCi at 2:00 PM; what is the activity of this isotope at 10:00 Am of that day?

Note: In question # 5 I gave you two different times: 2:00 pm and 10 am. of the same day. you are only required to find the absolute value of the difference between these two different time, which is going to be 4 hours. do not add a negative sign to the time. your final answer will be in the positive sign.

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4 200x10 2 200o mC - 2 Ci

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