Scientists can determine the age of ancient objects by a method called radiocarbon dating. The bombardment...
My Notes Ast our Teacher Scientist can determine the age of andient objects by a method called radiocarbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope of carbon, 1C, with a haf-ife of about 5730 years. Vegetation absorbs carbon dioxide through the atmosphere and animal life assimilates through food chains. When a plant or animal dies, t stops replacing its carbon and the amount of1C begins to decrease through radioactive decay. Therefore,...
Scientist can determine the age of ancient objects by a method called radiocarbon dating. The bombardment of the upper atmosphere by cosmic raysconverts nitrogen to a radioactive isotope of carbon, 14C, with a half-life of about 5730 years. Vegetation absorbs carbon dioxide through theatmosphere and animal life assimilates 14C through food chains. When a plant or animal dies, it stops replacing its carbon and the amountof 14C begins to decrease through radioactive decay. Therefore, the level of radioactivity must also...
In the carbon dating process for measuring the age of objects, carbon-14, a radioactive isotope, decays into carbon-12 with a half-life of 5730 years. A Cro-Magnon cave painting was found in a cave in Europe. If the level of carbon-14 radioactivity in charcoal in the cave is approximately 16% of the level of living wood, estimate how long ago the cave paintings were made. (Hint: Let the initial amount of carbon-14 be C0. Round your answer to the nearest year.)
After a plant or animal dies, its 14C content decreaseswith a half-life of 5730 years. If an archaeologist finds anancient firepit containing partiallyconsumed firewood, and the14C content of the wood is only 27.5% that of anequal carbon sample from a present-day tree, what is the age of theancient site?
My Notes +-/10 points 11 Ask Your Teacher Content Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 447 g (HINT: Assume all the carbon is12C and determine the number of atoms) and careful measurements show that the remainingC has a current decay rate of 22 decays/s Determine the age of the bone (and presumably the jewelry). Remember, the ratio of 14c to 12c when the animal died was 1.3x10-12 &...
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...
Problem # 8 Discuss Radioactive Decay. Outline the Principles of Carbon Dating. Provide necessary Mathematical Equations. Total 250 Words Minimum. Solve the following 4 problems. Show Full Work. Problem # A: A chemist determines that a sample of petrified wood has a carbon-14 decay rate of 6.00 counts per minute per gram. What is the age of the piece of wood in years? The decay rate of carbon-14 in fresh wood today is 13.6 counts per minute per gram, and...
A) All living things contain carbon. Most of this carbon is stable carbon-12. However, a small percentage will be carbon-14, a radioactive isotope of carbon thatdecays with time. As living things eat and breath, carbon is constantly recycled and therefore the percentage of carbon-14 remains constant. It's not until deaththat the percentage of carbon-14 will begin to diminish from decay. Because radioactive decay is a first-order process, the integrated rate law for a first-orderreaction can be rewritten asfraction remaining: 0.5...
1. Radioactivity is produced when unstable nuclei ____. (1 point)bond togetherbreak apartbecome coolerexpand2. The time it takes for 50% of the nuclei in a radioactive sample to decay to its stable isotope is called ____. (1 point)the daughter productgeologic timethe half-lifethe half-time3. The radiometric dating of an igneous rock provides ____. (1 point)the relative age of the rocka date for when the rock formedthe age of Eartha date for when the rock was eroded4. Which two substances do geologists use...
Using Python 3... Question 4: Carbon dating (3 points) Archaeologists use the exponential, radioactive decay of carbon-14 to estimate the death dates of organic material. The stable form of carbon is carbon-12, and the radioactive isotope carbon-14 decays over time into nitrogen-14 and other particles. Carbon is naturally in all living organisms, and the carbon-14 that forms in the upper atmosphere enters into living things as long as they are taking in material (food, air, etc.) that contains carbon. We...
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