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Author Question: Plutonium has a half life of 2.4 104 years. How long does it take for 99 of the plutonium to decay? ... (Read 83 times)

Tazate

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on: Jul 27, 2018
Plutonium has a half life of 2.4  104 years. How long does it take for 99 of the plutonium to decay?
 
  A) 1.6  106 y
  B) 1.6  105 y
  C) 1.6  104 y
  D) 1.6  103 y
  E) 1.6  102 y

Question 2

A radioactive substance with a half-life of 3 days has an initial activity of 0.24 Ci. What is its activity after 6 days?
 
  A) 0.48 Ci
  B) 0.02 Ci
  C) 0.06 Ci
  D) 0.23 Ci
  E) 0.12 Ci


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jjorrostieta

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Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


Tazate

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)

connor417

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Reply 3 on: Yesterday
Wow, this really help

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