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An artifact is found that has 33% of the 14C it had when it was living. How long ago was this artifact "alive"? The half-life of 14C = 5730 years.

An artifact is found that has 33% of the 14C it had when it was living. How long ago was this artifact "alive"? The half-life of 14C = 5730 years.

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter18: Nuclear Reactions
Section: Chapter Questions
Problem 37QAP
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1. An artifact is found that has 33% of the 14C it had when it was living. How long ago was this artifact "alive"? The half-life of 14C = 5730 years. 2. The mass change for the decay of 1 mol of 244Pu is -0.0033 g. What is the total energy change for this process?
Transcribed Image Text:1. An artifact is found that has 33% of the 14C it had when it was living. How long ago was this artifact "alive"? The half-life of 14C = 5730 years. 2. The mass change for the decay of 1 mol of 244Pu is -0.0033 g. What is the total energy change for this process?
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