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Question
A deposit of volcanic tuff contains the isotope potassium-40, which is slowly decaying into argon-40. How might the apparent age of the sample be affected if the volcanic tuff is heated and remains heated for a long period of time?A) The rate of decay will speed up.
B) The sample will appear older than it really is.
C) The sample will appear younger than it really is.
D) Heat will have no effect on the age of the sample.
Answer
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