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Author Question: Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6 ... (Read 46 times)

roselinechinyere27m

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on: Jul 28, 2018
Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6  10-6 Ci and a half-life of 12.3 years? (1 Ci = 3.7  1010 decays/s)
 a. 4  1010
  c. 7  108
  b. 2  108
  d. 1  1013

Question 2

Tritium has a half-life of 12.3 years. What proportion of its original radioactivity will a sample have after 6 years?
 a. 0.55
  c. 0.84
  b. 0.60
  d. 0.71
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amcvicar

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Reply #1 on: Jul 28, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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roselinechinyere27m

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Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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