![]() ![]() ![]() Problem #42: The carbon-14 decay rate of a sample obtained from a young tree is 0.296 disintegration per second per gram of the sample. ![]() What is the age of the piece of wood in years? The decay rate of carbon-14 in fresh wood today is 13.6 counts per minute per gram, and the half life of carbon-14 is 5730 years.ġ) Determine decimal fraction of C-14 remaining:Ģ) Determine how many half-lives have elapsed: Problem #41: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per minute per gram. Included in these are two which use C-14 as the example problem to be solved. Note: If you have not looked at the half-life videos on the Radioactivity menu, there are several which measure the drop off in radioactivity in terms of disintegrations. ChemTeam: Half-life problems involving carbon-14 Half-life problems involving carbon-14 Ten Examples Probs 26-40 Probs 1-10 Problems involving uranium-238 Probs 11-25 Examples and Problems only (no solutions) Return to Radioactivity menu ![]()
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