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Author Question: The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. How much ... (Read 139 times)

Metfan725

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on: Jul 28, 2018
The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. How much tritium will be left after 30 years?
 a. 0.20 kg
  b. 1.8 kg
  c. 0.18 kg
  d. 1.7 kg
  e. 4.1 kg

Question 2

The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. What will be the initial decay rate, at t = 0 (in decays/s)?
 a. 1.09  1014
  b. 1.8  10-9
  c. 5.6  108
  d. 3.6  1018
  e. 3.6  1017


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alvinum

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Reply #1 on: Jul 28, 2018
Answer to Question 1

B

Answer to Question 2

D


Metfan725

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Reply #2 on: Jul 28, 2018
Both answers were spot on, thank you once again


alvinum

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Reply #3 on: Jul 28, 2018
Great! Please up vote :D


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