Charcoal samples from Stonehenge in England wereburned in O2, and the resultant CO2 gas bubbled into asolution of Ca(OH)2 (limewater), resulting in the precipitationof CaCO3. The CaCO3 was removed by filtration anddried. A 788-mg sample of the CaCO3 had a radioactivityof 1.5x 10-2 Bq due to carbon-14. By comparison, livingorganisms undergo 15.3 disintegrations per minute pergram of carbon. Using the half-life of carbon-14, 5700 yr,calculate the age of the charcoal sample.

Charcoal samples from Stonehenge in England wereburned in O2, and the resultant CO2 gas bubbled into asolution of Ca(OH)2 (limewater), resulting in the precipitationof CaCO3. The CaCO3 was removed by filtration anddried. A 788-mg sample of the CaCO3 had a radioactivityof 1.5x 10-2 Bq due to carbon-14. By comparison, livingorganisms undergo 15.3 disintegrations per minute pergram of carbon. Using the half-life of carbon-14, 5700 yr,calculate the age of the charcoal sample.

Materials Science And Engineering Properties

1st Edition

ISBN:9781111988609

Author:Charles Gilmore

Publisher:Charles Gilmore

Chapter5: Phase Transformations And Phase Diagrams

Section: Chapter Questions

Problem 5.19P

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Concept explainers

Total Energy Consumption

The term energy consumption signifies the consumption of electricity. Energy consumption as electricity is a primary demand for households, factories, industries, complexes, and commercial places. According to a report, the total U.S. energy consumption for 2018 was 101 BTU (British Thermal Units). It accounted for 17% of the total energy consumption of the world. The total energy demand for the U.S. as oil equivalent was estimated to be about 6804 kg of oil equivalent.

Question

Charcoal samples from Stonehenge in England were
burned in O₂, and the resultant CO₂ gas bubbled into a
solution of Ca(OH)₂ (limewater), resulting in the precipitation
of CaCO₃. The CaCO₃ was removed by filtration and
dried. A 788-mg sample of the CaCO₃ had a radioactivity
of 1.5x 10^-2 Bq due to carbon-14. By comparison, living
organisms undergo 15.3 disintegrations per minute per
gram of carbon. Using the half-life of carbon-14, 5700 yr,
calculate the age of the charcoal sample.

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