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How has the amount of carbon dioixde became less over the years?
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Can you use carbon dating to find out how old something is around 40 years old or newer?
Carbon dating measures the amount of carbon halflives that an object's carbon-14 has seen. A halflife is the amount of time it takes for half of the C-14 present to decay into a different element (N-14). A carbon halflife is 5730 years so you wouldn't be able to tell with such a small amount of time.
What is the amount of carbon 14 remaining after 28500 years?
1/32 g
Why can't carbon 14 be used to date material that is older than 75000 years?
The half-life of carbon is roughly 6000 years. That means that every 6000 years, the amount of Carbon halves. Therefore, in a million years, the amount of carbon-14 would be so low that it would be extremely difficult to determine the exact age of the shell. So radioactive elements of longer half-lives, such as Uranium-238(half-life of 4.9 billion years) are used to date older objects.
Has the amount of oxygen released into the atmosphere increased in recent years?
The amount of oxygen released into the atmosphere has not noticeably increased in recent years. The amount of oxygen (O2) in the atmosphere is about 21%. It is part of the earth's oxygen cycle, the main driver of which is photosynthesis. Vegetation removes carbon dioxide (CO2) from the atmosphere, releases the oxygen (O2) and stores the carbon (C).
What is the problem with a small increase in carbon dioxide concentration in the atmosphere?
A small amount of carbon dioxide is all it takes to keep the earth comfortably warm for millions of years. A small increase in the amount of carbon dioxide in the atmosphere is all it takes to cause global warming and threaten the future of the human race.
Can you use carbon dating to find out how old something is around 40 years old or newer?
Carbon dating measures the amount of carbon halflives that an object's carbon-14 has seen. A halflife is the amount of time it takes for half of the C-14 present to decay into a different element (N-14). A carbon halflife is 5730 years so you wouldn't be able to tell with such a small amount of time.
What is the amount of carbon 14 remaining after 28500 years?
1/32 g
Why can't carbon-14 be used to date a tree that died less than 200 years ago?
Because the decomposition of carbon 14-->carbon 12 is so slow that it has not yet produced a measurable amount of Carbon 12. The half life for this reaction is about 5270 years.
What effect does fuel have on the amount of carbon dioxide in the air?
Most of our fuel is fossil fuel, that is, coal, oil and natural gas. When these are used for fuel (by burning) they release carbon which has been stored in them for millions of years. This is adding to the amount of carbon dioxide (a greenhouse gas) in the atmosphere.
Why can't carbon 14 be used to date material that is older than 75000 years?
The half-life of carbon is roughly 6000 years. That means that every 6000 years, the amount of Carbon halves. Therefore, in a million years, the amount of carbon-14 would be so low that it would be extremely difficult to determine the exact age of the shell. So radioactive elements of longer half-lives, such as Uranium-238(half-life of 4.9 billion years) are used to date older objects.
Why is useful to know how much of the element carbon is in a fossil?
Carbon dating is a process that determines how old a substance is by the amount of carbon it contains. If the amount of carbon in a fossil is known, the approximate date of the fossilization of a particular substance can be determined using the known half life of carbon. This can be used to determine what time period an organism died even millions of years ago.
Has the amount of oxygen released into the atmosphere increased in recent years?
The amount of oxygen released into the atmosphere has not noticeably increased in recent years. The amount of oxygen (O2) in the atmosphere is about 21%. It is part of the earth's oxygen cycle, the main driver of which is photosynthesis. Vegetation removes carbon dioxide (CO2) from the atmosphere, releases the oxygen (O2) and stores the carbon (C).
Why would it be difficult to date an item that was 1000000 years old using this technique?
What technique, if you mean carbon-dating, it's because the half-life is too short (a little less than 6,000 years). After that many years, the amount of carbon is negligible.
What is the problem with a small increase in carbon dioxide concentration in the atmosphere?
A small amount of carbon dioxide is all it takes to keep the earth comfortably warm for millions of years. A small increase in the amount of carbon dioxide in the atmosphere is all it takes to cause global warming and threaten the future of the human race.
How does the greenhouse effect increase the amount of carbon dioxide in the atmosphere?
The greenhouse effect does not increase the amount of carbon dioxide in the atmosphere. The greenhouse effect happens because of the carbon dioxide (and other greenhouse gases) in the atmosphere.It is the burning of fossil fuels that increases the amount of carbon dioxide in the atmosphere. Burning coal, oil and natural gas releases age-old carbon dioxide that was laid down underground millions of years ago, so letting it free now puts an impossible burden on the carbon cycle, which cannot remove it.
The radioactive substance Carbon-14 has a half life of 5730 years. After 1000 years there is 2.66 grams remaining. What was the initial amount of the substance?
3.002 grams, approx.
Why cant carbon-14 be used to date material that is older than 75000 years?
Carbon has a half life of 5730 years. That means that after 5730 years there'll only be half the amount left. After about 11500 there will be a quarter of the original. After 75000 years there will be about 0.0001 of the original sample which is too small to date accurately?
