The half-life of the C14 isotope is 5730 years. 19,000 years after an animal dies the fraction of carbon in its bones that is C14 will have decreased to about ______ percent of its original level."
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- The half-life of the C14 isotope is 5730 years. How many years after an animal dies will it take for the concentration of C14 to decrease to 12.5 percent (1/8th) of its original level? 716 5730 11460 17190Carbon makes up 18.5% of the human body, but the top of the carbon section in the stacked column of the infographic lines up with about 35% on the y‑axis. What accounts for the difference?Carbon-14 has a half-life of 5730 yr. A living organism has an activity of 15.2 counts per minute (cpm) per gram of carbon. If a bone is determined to have an activity of 13.0 cpm per gram of carbon, how old is the bone in the unit of years? Please report an integer.
- “People living in the urban areas of Bangladesh are at high risk of heavy metal poisoning”- briefly explain this statement in1000 words, explain at your own words_______________ are organisms that transform the energy of the sun into chemical bond energy.Some scientists have speculated that life forms elsewhere in the universe could be based on silicon, rather than carbon. What properties does silicon share with carbon that makes this more likely than say aluminum-based life or neon-based life?
- About how many carbon (14) beta decays occur in your body every minute? Group of answer choices 12 12,000 120,000 120,000,000 120,000,000,000O is made of a single type of atom O all of the above. QUESTION 3 This is the correct sorting of major elements in the human body from the most abundant (in percentage) to the least abundant: O Oxygen; carbon; hydrogen; nitrogen O Oxygen; hydrogen; carbon; nitrogen O Carbon; oxygen; hydrogen; nitrogen O Carbon; hydrogen; oxygen; nitrogen Click Save and Submit to save and submit. Click Save All Answers to save all answers. a 72 ip 11 AA 24 & * 8. T. Y H. K L 96 GMany radioactive isotopes are used in medicine for imaging and treatment purposes. The specific isotopes used depends on the particular organ or body system being studied (for example, Xe-133 is used to image lung function and blood flow.) Technetium-99m is a common radioactive isotope using for a variety of medical applications. It is produced from the decay of Molybdenum-99 and has a half-life of 6.01 hours. What are some of the applications of Tc-99m? While harder to access, another radioactive isotope of technetium, Tc-93, has a half-life of 2.73 hours. If it were easier to harvest, would this be a good substitute for Tc-99m? (remember to explain why for full credit) While Tc-99m has a half-life of 6.01 hours, its decay product has a half-life of 213,000 years. While the medical community considers it to be reasonably safe, within the limits of testing, does this make sense considering both chemical and biological principles? What are possible ways that you might deal with or…
- Critically comment on the following statement: Cadmium does not show molecular homology with other essential metals in the human body but plays a key role in disrupting important neurological processes. Over a lifetime, this heavy metal accumulates in the brain leading to symptoms of Parkinsonism.True or false: The "Miller Urey" experiment that found heating and cooling gases such as H20 and CH4 were able to produce small organic molecules. This proved that life originated on Earth through natural mechanisms.The following are the six most common elements in the human body: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Each of these elements is heavier than hydrogen and helium. Explain how and where these elements formed.