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The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.36 h later it is 7.80 mCi. Determine the following. (a) Decay constant (in s-1) 2.4e-4 s-1 (b) Half-life (in h) 2887.916 How is the half-life related to the decay constant? h (c) Nuclei in the sample when the activity was 10.7 mCi 2887.916 How is the number of nuclei related to the decay constant and the activity? nuclei (d) Activity (in mCi) of the sample 3.30 h after the time when it was 10.7 mCi 2887.916 How is the activity of a radioactive sample at any time related to the activity at some time t = 0, the decay constant and time? mCi

The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.36 h later it is 7.80 mCi. Determine the following. (a) Decay constant (in s-1) 2.4e-4 s-1 (b) Half-life (in h) 2887.916 How is the half-life related to the decay constant? h (c) Nuclei in the sample when the activity was 10.7 mCi 2887.916 How is the number of nuclei related to the decay constant and the activity? nuclei (d) Activity (in mCi) of the sample 3.30 h after the time when it was 10.7 mCi 2887.916 How is the activity of a radioactive sample at any time related to the activity at some time t = 0, the decay constant and time? mCi

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MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.36 h later it is 7.80 mCi. Determine the following. (a) Decay constant (in s-ly 2.4e-4 V s-1 (b) Half-life (in h) 2887.916 How is the half-life related to the decay constant? h (c) Nuclei in the sample when the activity was 10.7 mCi 2887.916 How is the number of nuclei related to the decay constant and the activity? nuclei (d) Activity (in mCi) of the sample 3.30 h after the time when it was 10.7 mCi 2887.916 How is the activity of a radioactive sample at any time related to the activity at some time t = 0, the decay constant and time? mCi
Transcribed Image Text:MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The activity of a sample of a radioisotope at some time is 10.7 mCi and 0.36 h later it is 7.80 mCi. Determine the following. (a) Decay constant (in s-ly 2.4e-4 V s-1 (b) Half-life (in h) 2887.916 How is the half-life related to the decay constant? h (c) Nuclei in the sample when the activity was 10.7 mCi 2887.916 How is the number of nuclei related to the decay constant and the activity? nuclei (d) Activity (in mCi) of the sample 3.30 h after the time when it was 10.7 mCi 2887.916 How is the activity of a radioactive sample at any time related to the activity at some time t = 0, the decay constant and time? mCi
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