TASC Physical Sciences Level 3 Practice Questions - TASC Physical Sciences Level 3 (Course Code PSC315118) Exam

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Cobalt-60 has a half-life of 5.27 years. If a radioactive source originally contains 80.0 g of Cobalt-60, how much Cobalt-60 remains after 15.81 years?

10.0 g 20.0 g 40.0 g 5.0 g

Correct Answer:

10.0 g

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