0
If a radioactive isotope had a half - life of 1 billion years how much of it would be left after 2 billion years?
1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years. 1/4: Half would be gone after a billion years and half of that would be gone in another billion years.
What else can I help you with?
Were dinosaurs alive 500000000000000000 years ago?
No, the earth is only about 4 billions years old, which is 4,000,000,000. The universe is thought to be about 14 billion years old, which means it would not have existed either.
How long ago the earth was formed age in years?
it is 4.54 billion years...
What was the first organism evolved on earth around 4 billion years ago?
Single cell prokaryotes first appeared perhaps 3.8 billion years ago.
Was Oxygen present in Earth's second atmosphere over 4.5 billion years ago?
The Carboniferous period, during which oxygen amounted to 35% of the atmosphere by volume (this was around 300 million years ago). Nowadays the amount is 20.95%.
Did sun or earth is born first?
The solar nebula formed (~7 billion years ago)The solar nebula collapsed into the disk of the solar system (~6.5 billion years ago)The sun formed and ignited fusion at the center of the disk of the solar system (~6 billion years ago)The planets, asteroids, and comets formed from the outer parts of the disk of the solar system (~4.5 billion years ago)
Is potassium 40 a stable isotope?
No, potassium-40 is a radioactive isotope of potassium. It undergoes radioactive decay with a half-life of about 1.25 billion years, emitting beta particles in the process.
How many years will it take for 10g of radioactive uranium to decay into 5g of radioactive uranium?
The half-life of uranium is typically around 4.5 billion years. After one half-life, 10g of uranium will decay into 5g. So, it would take 4.5 billion years for 10g of uranium to decay into 5g.
What is the appropriate radioactive isotope to use to estimate the age of a rock from a rock formation believed to be a billion years old?
Uranium-238 (U-238) is an appropriate radioactive isotope to estimate the age of a rock formation believed to be a billion years old. This isotope has a half-life of about 4.5 billion years, making it suitable for dating rocks of such age. By measuring the ratio of U-238 to its decay product, lead-206 (Pb-206), scientists can calculate the age of the rock formation.
What is argon's half-life?
Argon does not have a half-life because it is a stable element. Argon-40, a radioactive isotope of argon, has a half-life of about 1.25 billion years and is commonly used in radiometric dating.
What would you expect the half-life of the isotope used to date the age of Earth at 4.6 billion years used to be?
The half-life of the isotope used to date the age of Earth at 4.6 billion years would need to be roughly around 1.5 billion years. This would allow for the gradual decay of the isotope over time, leading to the age estimate of the Earth.
How are radioactive isotopes used determine the absolute age of igneous rock?
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope. At the next half-life there will be 25% of the radioactive isotope and 75% of the stable isotope. At the next half life there will be 12.5% radioactive and 87.5% stable. Example: Carbon-14 is a radioactive isotope with a half life of 5,730 years. How old would carbon-14 be when there is 75% carbon-14 in the rock? 75% is half of the time before the half-life, so it would be 2,365 years. Hope this helps. Half life helps scientists find how much the isotope has decayed and the age of the rock.
How are radioactive isotopes used to determine the absolute age of igneous rock.?
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope. At the next half-life there will be 25% of the radioactive isotope and 75% of the stable isotope. At the next half life there will be 12.5% radioactive and 87.5% stable. Example: Carbon-14 is a radioactive isotope with a half life of 5,730 years. How old would carbon-14 be when there is 75% carbon-14 in the rock? 75% is half of the time before the half-life, so it would be 2,365 years. Hope this helps. Half life helps scientists find how much the isotope has decayed and the age of the rock.
Is ac radioactive?
Actinium is radioactive. The Ac-227 isotope has a half life of 21.77 years
The characteristic of the radioactive isotope uranium-238 that makes this isotope useful for accurately dating the age of a rock is the isotope's BLANK?
The characteristic of the uranium-238 isotope that makes it useful for dating rocks is its long half-life of about 4.5 billion years. This allows for accurate dating of rocks that are billions of years old.
What is the similarity of radioactive isotope and radioactive dating?
Both radioactive isotopes and radioactive dating rely on the process of radioactive decay. Radioactive isotopes decay at a known rate, allowing scientists to measure the passage of time based on the amount of decay that has occurred. Radioactive dating uses this decay process to determine the age of rocks and fossils.
Isotope A has half-life of seconds and isotope B has a half-life of millions of years which isotope is more radioactive?
Isotope A is more radioactive because it has a shorter half-life, indicating a faster rate of decay. A shorter half-life means that more of the isotope will undergo radioactive decay in a given time period compared to an isotope with a longer half-life.
Is U-238 a short lived radioactive isotope?
No, it has a half-life* of around 4.468 billion years *A Half-life is the time it takes for the amount of substance undergoing decay to half.
