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6 pts 1. At the start of PQ-8 at 11:00, there are 1000 radionuclides on your desk. If its half-life is 2 hours, how many

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6 pts 1. At the start of PQ-8 at 11:00, there are 1000 radionuclides on your desk. If its half-life is 2 hours, how many radionuclides were there 30 minutes ago, at 10:30? 2.14 pts The activity of a sample of fossil containing 5 gram carbon is measured to be 0.0185 Bq. What is the age of the fossil? In a living organism; C-14 is in equilibrium, and its activity is 7.5 picoCi per gram of carbon. Half-life of C-14 = 5730 yr 1 Ci = 3.7 x 1010 Bq pico = 10-12

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