Mass of carbon in animal bone fragment found in an archeological site is 198g. If the...
Mass of carbon in animal bone fragment found in an archeological site is 198g. If the bone registers an activity of 16 decays/s from radioactive 14C. What is its age?.
Assume that the animal when it died that the ratio of 14C to 12C was 1.3x10-12. The half-life of 14C is 5730years.
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Mass of carbon in animal bone fragment found in an archeological
site is 198g. If the...
An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of...
An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 303 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 14 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was 1.3×10-12 & the half-life of 14C is 5730 y. age of...
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient...
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 435 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 11 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was...
A small bone found at an archeological excavation site has 1/16 the normal carbon-14 decay rate....
A small bone found at an archeological excavation site has 1/16 the normal carbon-14 decay rate. The half-life of carbon-14 is T=5700 years. Determine the bone's age. Express your answer using two significant figures.
1. The remains of a pre-historic human are found. The mass of carbon in the sample...
1. The remains of a pre-historic human are found. The mass of carbon in the sample is 8.5kg. The activity i.e. the number of decays per second is 700 decays/second. In living matter the ratio of 14c/?C=1.3. 10-12 14C is radioactive, whereas 12C is stable. Carbon's atomic mass is 12g per 6.02.102 atoms. The halflife of carbon is 5730 years. Make sure to label the different parts of your answer! a) How many carbon atoms are in the sample? b)...
An artifact classified as bone, horse, found in a site at Offham, England, is found to...
An artifact classified as bone, horse, found in a site at Offham, England, is found to have a 14C radioactivity of 0.192 counts per second per gram of carbon. If living carbon-containing objects have an activity of 0.255 counts per second per gram of carbon, estimate the age of the artifact? The half-life of 14C is 5730 years. у
An ancient club is found that contains 190 g of pure carbon and has an activity...
An ancient club is found that contains 190 g of pure carbon and has an activity of 6.5 decays per second. Determine its age assuming that in living trees the ratio of (14C / 12C) atoms is about 1.20×10-12. Note that the half life of carbon-14 is 5700 years and the Avogadro number is 6.02×1023. Answer in years.
An ancient club is found that contains 140 g of pure carbon and has an activity...
An ancient club is found that contains 140 g of pure carbon and has an activity of 5.5 decays per second. Determine its age assuming that in living trees the ratio of (14c 12c) atoms is about . Note that the half life of carbon-14 is 5700 years and the Avogadro number is 6.02x10^23. in years
An ancient wooden club is found that contains 79 g of carbon and has an activity...
An ancient wooden club is found that contains 79 g of carbon and has an activity of 7.0 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.3×10−12.
An ancient wooden club is found that contains 65 g of carbon and has an activity...
An ancient wooden club is found that contains 65 g of carbon and has an activity of 8.1 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.3×10^-12. Answer In years
An ancient wooden club is found that contains 66 g of carbon and has an activity...
An ancient wooden club is found that contains 66 g of carbon and has an activity of 7.5 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.3×10−12. Please show your work.
11. My Notes Ask Your Teacher -/10 points Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 435 g (HINT: Assume all the carbon is 12C and determine the number of atoms) and careful measurements show that the remaining 14C has a current decay rate of 11 decays/s. Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14C to 12C when the animal died was...
1. The remains of a pre-historic human are found. The mass of carbon in the sample is 8.5kg. The activity i.e. the number of decays per second is 700 decays/second. In living matter the ratio of 14c/?C=1.3. 10-12 14C is radioactive, whereas 12C is stable. Carbon's atomic mass is 12g per 6.02.102 atoms. The halflife of carbon is 5730 years. Make sure to label the different parts of your answer! a) How many carbon atoms are in the sample? b)...
An artifact classified as bone, horse, found in a site at Offham, England, is found to have a 14C radioactivity of 0.192 counts per second per gram of carbon. If living carbon-containing objects have an activity of 0.255 counts per second per gram of carbon, estimate the age of the artifact? The half-life of 14C is 5730 years. у
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