On October 26, 2019, an archaeologist unearthed a radioactive specimen. Month later, he weighed the material and found out to be 180 pounds. A year later since last time he took its weight, only 84 pounds of the sample remains. Calculate: (Reference date will be the day the sample was unearthed and assume 1yr= 360days and1month=30days) a.)time in years at which 90% of the original amount decayed. b.)approximate no. of years at which all the specimen will be depleted.
On October 26, 2019, an archaeologist unearthed a radioactive specimen. Month later, he weighed the material and found out to be 180 pounds. A year later since last time he took its weight, only 84 pounds of the sample remains. Calculate: (Reference date will be the day the sample was unearthed and assume 1yr= 360days and1month=30days) a.)time in years at which 90% of the original amount decayed. b.)approximate no. of years at which all the specimen will be depleted.
Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN:9781305960060
Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Chapter10: Radioactivity And Nuclear Processes
Section: Chapter Questions
Problem 10.18E
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On October 26, 2019, an archaeologist unearthed a radioactive specimen. Month later, he weighed the material and found out to be 180 pounds. A year later since last time he took its weight, only 84 pounds of the sample remains.
Calculate: (Reference date will be the day the sample was unearthed and assume 1yr= 360days and1month=30days)
a.)time in years at which 90% of the original amount decayed.
b.)approximate no. of years at which all the specimen will be depleted.
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