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Potassium has several radioactive isotopes with different half lives, but I presume you are thinking of K-40, the one used in potassium argon dating. Any isotope decays by half in one half life, so you'd need 2 half lives for 75% to decay. The half life of K-40 is 1.248 x 10^9 years, so the answer is 2.496 x 10^9 years.
What else can I help you with?
What is the age of a mineral that contains 25 percent parent and potassium 40 and argon 40 and 75 percent daughter and the half life potassium 40 is 1.25 billion years?
The age of the mineral can be estimated using the ratio of parent to daughter isotopes. With 25% parent (K40) and 75% daughter (Ar40), this would correspond to three half-lives since 25% is reduced by half three times to reach 75%. Given the half-life of K40 is 1.25 billion years, the age of the mineral would be approximately 3.75 billion years old.
How long does a disposable diaper take to disintegrate?
A disposable diaper can take up to 500 years to disintegrate due to the synthetic materials used in its production. Their slow decomposition rate contributes to environmental pollution and waste management issues.
How much of an 800-gram sample of potassium-40 will remain after 3.910000000000 years of radioactive decay?
Approximately 400 grams of the potassium-40 sample will remain after 3.91 years, as potassium-40 has a half-life of around 1.25 billion years. This means that half of the initial sample would have decayed by that time.
How long does a Disposable Diaper disintegrate?
It can take up to 500 years for a disposable diaper to disintegrate in a landfill due to the materials they are made of, such as plastic and superabsorbent polymers. Recycling or using biodegradable diapers can be more environmentally friendly options.
How many atoms of calcium and potassium will there be after 4.12 and times 105 years?
The number of atoms of calcium and potassium after 4.12 × 10^5 years would remain the same, as these elements do not spontaneously change into other elements over such timescales. Assuming a stable environment and no external factors affecting the atoms, the number of calcium and potassium atoms would remain constant.
How long would it take for the statue of liberty to disintegrate?
About 1500 years.
How many years does disposable items take to disintegrate?
about 100 to 500 years
What would 2 percent be on 15000 for 5 years?
2 percent of 15,000 for 5 years
What is the age of a mineral that contains 25 percent parent and potassium 40 and argon 40 and 75 percent daughter and the half life potassium 40 is 1.25 billion years?
The age of the mineral can be estimated using the ratio of parent to daughter isotopes. With 25% parent (K40) and 75% daughter (Ar40), this would correspond to three half-lives since 25% is reduced by half three times to reach 75%. Given the half-life of K40 is 1.25 billion years, the age of the mineral would be approximately 3.75 billion years old.
How long does a disposable diaper take to disintegrate?
A disposable diaper can take up to 500 years to disintegrate due to the synthetic materials used in its production. Their slow decomposition rate contributes to environmental pollution and waste management issues.
How much of an 800-gram sample of potassium-40 will remain after 3.910000000000 years of radioactive decay?
Approximately 400 grams of the potassium-40 sample will remain after 3.91 years, as potassium-40 has a half-life of around 1.25 billion years. This means that half of the initial sample would have decayed by that time.
How long does a Disposable Diaper disintegrate?
It can take up to 500 years for a disposable diaper to disintegrate in a landfill due to the materials they are made of, such as plastic and superabsorbent polymers. Recycling or using biodegradable diapers can be more environmentally friendly options.
How much potassium-40 would remain after three half lives?
Potassium 40 is an isotope with 19 protons (and electrons) and 21 neutrons. Potassium 40 accounts for around 0.012% of potassium and is fairly stable (half life of 1.25 billion years).Potassium 40 is an isotope with 19 protons (and electrons) and 21 neutrons. Potassium 40 accounts for around 0.012% of potassium and is fairly stable (half life of 1.25 billion years).Potassium 40 is an isotope with 19 protons (and electrons) and 21 neutrons. Potassium 40 accounts for around 0.012% of potassium and is fairly stable (half life of 1.25 billion years).Potassium 40 is an isotope with 19 protons (and electrons) and 21 neutrons. Potassium 40 accounts for around 0.012% of potassium and is fairly stable (half life of 1.25 billion years).
Where does the plastic go?
into landfill things but they can take, what is it? like more than 1000 years to disintegrate
How many atoms of calcium and potassium will there be after 4.12 and times 105 years?
The number of atoms of calcium and potassium after 4.12 × 10^5 years would remain the same, as these elements do not spontaneously change into other elements over such timescales. Assuming a stable environment and no external factors affecting the atoms, the number of calcium and potassium atoms would remain constant.
What would the average year fixed rate mortgage cost?
The average of a 30 years contract would cost about 3.57 percent of the available capital. The average of a 15 years contract would cost about 2.72 percent.
Does wood disintegrate after two thousand years?
Wood is a fiberous material and it decomposes with time. Chemically treated wood takes longer to rot away but that would depend on the environmental location.
