![subject](/tpl/images/cats/himiya.png)
Chemistry, 10.05.2021 03:30 faithkristi
Carbon-14 is a radioactive isotope. It is found in the air in carbon dioxide molecules. The amount of carbon-14 in the air has stayed the same for thousands of years. There is a small amount of radioactive carbon-14 in all living organisms because it enters the food chain. Once an organism dies, it stops taking in carbon-14. The carbon-14 it contained at the time of death decays over a long period of time, and the radioactivity of the material decreases. The approximate time since the organism died can be worked out by measuring the amount of carbon-14 left in its remains compared to the amount in living organisms. In 1991, two hikers discovered a mummified man, preserved for centuries in the ice on an alpine mountain. Later called Ötzi the Iceman, small samples from his body were carbon dated by scientists and found to contain approximately 47% less carbon-14 than the amount found in living organisms. Based on this finding, how old are the remains of Ötzi the Iceman estimated to be?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 13:10, bartonamber4042
Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775
Answers: 1
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 19:20, Lovelybunny321
15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
Answers: 1
You know the right answer?
Carbon-14 is a radioactive isotope. It is found in the air in carbon dioxide molecules. The amount o...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/User.png)
![Konu](/tpl/images/cats/mkx.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 06.05.2021 02:00
![Konu](/tpl/images/cats/health.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 06.05.2021 02:00