Question 5 0 / 1 pts An element, X has an atomic number 45 and a atomic mass of 133.559 u. This element is unstable and

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Question 5 0 / 1 pts An element, X has an atomic number 45 and a atomic mass of 133.559 u. This element is unstable and

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Question 5 0 1 Pts An Element X Has An Atomic Number 45 And A Atomic Mass Of 133 559 U This Element Is Unstable And 1
Question 5 0 1 Pts An Element X Has An Atomic Number 45 And A Atomic Mass Of 133 559 U This Element Is Unstable And 1 (56.28 KiB) Viewed 42 times
Question 5 0 / 1 pts An element, X has an atomic number 45 and a atomic mass of 133.559 u. This element is unstable and decays by B-decay, with a half life of 68d. The beta particle is emitted with a kinetic energy of 11.71MeV. Initially there are 9.41x1012 atoms present in a sample. Determine the activity of the sample after 107 days (in uCi). wered 0.3361 answer 10.0812 margin of error +/- 1%
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