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The top documents tagged [halflife of ra]
Katharina Richert Carl Stevenson History Coal used since bronze age (2000 BC) Wood more convenient until the Industrial Revolution 1769: James Watt invents
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Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.4 x 10 -6 Ci and a half-life of 12.3 years? (1 Ci = 3.7
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Aim: What is the half-life of a radioisotope Do Now:
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