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It is noted that a sample of 134La with a half-life of 6.5 minutes has an activity of 2.6 Ci. What was its activity 72 minutes ago?

It is noted that a sample of 134La with a half-life of 6.5 minutes has an activity of 2.6 Ci. What was its activity 72 minutes ago?
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1 vote
It is noted that a sample of 134La with a half-life of 6.5 minutes has an activity of 2.6 Ci. What was its activity 72 minutes ago?

User UDude
by
7.7k points

1 Answer

6 votes

Answer:

36//

Step-by-step explanation:

(½)^t

(½)^72

72/2=36//

User Joel Almeida
by
8.5k points
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