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Use the law of radioactive decay to determine the activity of a 2.0 g sample of Tc-99, t1/2 = 2.2 105 y. 1. 3.3 102

Use the law of radioactive decay to determine the activity of a 2.0 g sample of Tc-99, t1/2 = 2.2 105 y.

1. 3.3 102 Ci

2. 3.3 108 Ci

3. 1.0 Ci

4. 1.0 106 Ci

5. 1.5 Ci

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