60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have after 15.81 years? Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what mass of 132Ba will remain after 88.0 min? Silicon-32 is a beta emitter with a half-life of 650.0 years. How long would it take for a 8.00g sample of 32Si to become 2.00g of 32Si and 6.00g of 32P? A fragment of wood has a 14C activity of 0.0638 Bq/g. A living tree has a 14C activity of 0.2552 Bq/g. How old is the fragment of wood?
60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have after 15.81 years? Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what mass of 132Ba will remain after 88.0 min? Silicon-32 is a beta emitter with a half-life of 650.0 years. How long would it take for a 8.00g sample of 32Si to become 2.00g of 32Si and 6.00g of 32P? A fragment of wood has a 14C activity of 0.0638 Bq/g. A living tree has a 14C activity of 0.2552 Bq/g. How old is the fragment of wood?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter25: Nuclear Chemistry
Section25.4: Rates Of Nuclear Decay
Problem 25.6CYU
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60Co has a half-life of 5.27 yr. What percentage of its original activity will a sample of 60Co have after 15.81 years?
Barium-142 is an beta emitter with a half-life of 11.0 min. If we start with 2.500 g of 142Ba, what mass of 132Ba will remain after 88.0 min?
Silicon-32 is a beta emitter with a half-life of 650.0 years. How long would it take for a 8.00g sample of 32Si to become 2.00g of 32Si and 6.00g of 32P?
A fragment of wood has a 14C activity of 0.0638 Bq/g. A living tree has a 14C activity of 0.2552 Bq/g. How old is the fragment of wood?
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